traffic alert & collision avoidance system i · model sky899a traffic alert & collision...

Model SKY899A

Traffic Alert & CollisionAvoidance System I

Pilot’s Guidefor the



Model SKY899A

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SKY899A Pilot’s GuideA

Eyes That Never Blink™

Early TCASIn the early days of flight, pilots were equipped with all theyneeded for effective collision avoidance–a sharp pair of eyes.But increasing traffic at higher speeds led to the developmentof TCAS II (Traffic Alert and Collision Avoidance Systems)which were too expensive for most regional airlines, businessaircraft, and general aviation aircraft.

Proven ExperienceL-3 Avionics Systems has been involved in the development ofcollision warning programs since the early 1980’s. In 1985, L-3Avionics Systems began development of an enhanced collisionwarning system for the Navy’s T-34C training aircraft.

Based largely on the success of the Navy project, L-3 AvionicsSystems was selected to validate the specifications for TCAS I, amore affordable alternative to TCAS II. As a result, L-3 AvionicsSystems’ original TCAS I unit, the TCAS791, was the first TCAS I tobe granted a Technical Standard Order (TSO), first to receive a full,unrestricted Supplemental Type Certificate (STC), first to fly, andfirst to be delivered.

SKYWATCH®

In the late 90’s, L-3 Avionics Systems developed an even moreaffordable system called the SKYWATCH model SKY497 TrafficAdvisory System (TAS) with less power, and a shorter range.Now there’s the SKYWATCH HP model SKY899A TCAS I systemthat combines the power, range, and TCAS I certification of theearlier TCAS791 with the affordability of the originalSKYWATCH SKY497.

In addition to its TCAS I certification, the SKYWATCH HPSKY899A improves upon the SKY497 by adding a larger surveil-lance range (35 nmi), a higher maximum closure rate (1200kn), and built-in hardware and software that makes theSKYWATCH HP Automatic Dependent Surveillance-Broadcast(ADS-B)-ready for the future when the technology becomesstandardized.



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© Copyright 2002, 2004L-3 Communications Avionics Systems, Inc.

SKYWATCH®, EYES THAT NEVER BLINK™, Stormscope®, and i-linc™ are trademarks ofL-3 Communications Avionics Systems, Inc.; Skydrol® is a registered trademark of Solutia, Inc.

The white L3 in a circle design logo is a trademark of L-3 Communications Corporation.

Designed and manufactured in the United States of America by

Methods and apparatus disclosed and described herein have been developed solely on company funds of L-3Communications Avionics Systems, Inc. No government or other contractual support or relationship what-soever has existed which in any way affects or mitigates proprietary rights of L-3 Communications AvionicsSystems, Inc. in these developments. Methods and apparatus disclosed herein may be subject to U.S. Patentsexisting or applied for. L-3 Communications Avionics Systems, Inc. reserves the right to add, improve, modify,or withdraw functions, design modifications, or products at any time without notice.

L-3 Communications Avionics Systems, Inc.5353 52nd Street, S.E.Grand Rapids, MI 49512 USA(800)253-9525 or (616)949-6600Fax (616)285-4224www.L-3com.com/as

SKY899A Pilot’s Guideii

Safety SummaryThese warnings and cautions appear later in this guide and arerepeated here for emphasis:

To avoid power surges that could damage the SKY899A, start yourengines before turning on the SKY899A.

The SKY899A relies on information obtained from transponders innearby aircraft. The SKY899A does not detect or track aircraftwhich are not equipped with an operating Air Traffic ControlRadar Beacon System (ATCRBS) transponder.

The SKY899A does not track intruder aircraft approaching at aclosure rate greater than 1200 knots.

Some traffic within the chosen display range may not be displayeddue to traffic prioritizing, antenna shielding, ground intruderfiltering, interference limiting, or surveillance range being shorterthan the chosen display range.

Optimum SKY899A performance is realized when intruder aircraftare reporting their altitude (via a mode C or other altitudereporting transponder).

Do not attempt evasive maneuvers based solely on traffic informa-tion on the display. Information on the display is provided to theflight crew as an aid in visually acquiring traffic; it is not areplacement for Air Traffic Control (ATC) and See & Avoidtechniques.

page 3-5

page 3-5

page 3-5

page 3-6

CAUTION

page 3-1

page 3-5

WARNING

WARNING

WARNING

WARNING

CAUTION

SKY899A Pilot’s Guide iii

Important NoticeThis guide provides general information about the operation ofthe SKY899A. This guide does not cover all possible intercon-nections with all possible types and numbers of displays andcustomer-supplied switches. Refer to your aircraft flight manualand flight manual supplement for information specific to youraircraft. If there is conflicting information between those manualsand this pilot’s guide, your aircraft flight manual and flight manualsupplement take precedence over this pilot’s guide.

Revision HighlightsThis revision B of the pilot’s guide makes the following changes:

• Changes occurrence of “Goodrich Avionics Systems” to“L-3 Communications Avionics Systems, Inc.” or just “L-3Avionics Systems” and makes related company contactinformation changes. (On March 28, 2003, GoodrichCorporation sold its Avionics Systems division to L-3Communications Corporation.)

• Adds references to the RGC350

• Eliminates the Warranty Information chapter. Warrantyinformation is now provided on a separate warranty card.

SKY899A Pilot’s Guide v

Table of ContentsSection Page

List of Illustrations ...................................... vii

List of Tables.............................................. vii

Abbreviations & Acronyms............................ vii

Chapter 1, System Description.................... 1-1General Description ................................................................... 1-1Transmitter Receiver Computer (TRC) ....................................... 1-2Directional Antenna .................................................................. 1-2Display (Not Supplied) .............................................................. 1-2Interaction of Major Components .............................................. 1-3Functional Description .............................................................. 1-5Features ..................................................................................... 1-7

Chapter 2, Typical Controls & Indicators ....... 2-1Introduction .............................................................................. 2-1Control Panel (Not Supplied) ..................................................... 2-1

Power Switch ........................................................................ 2-1Operating Mode Switch ........................................................ 2-1Display Range Switch ........................................................... 2-1Vertical Display Mode Switch ................................................ 2-1Test Switch ........................................................................... 2-1

Typical Screen Elements ............................................................. 2-2Discrete Indicator Lamps ........................................................... 2-5

Vertical Display Mode Indicator Lamps (Not Supplied) .......... 2-5Operate Lamp (Optional, Not Supplied) ............................... 2-5

Aural Announcements ............................................................... 2-5

Chapter 3, Operating Instructions................ 3-1Introduction .............................................................................. 3-1Turn On the SKY899A .............................................................. 3-1Run the Operator-Initiated Self Test ............................................ 3-2Switch Between Standby & Operating Mode............................... 3-3Change the Display Range ......................................................... 3-4Change the Vertical Display Mode .............................................. 3-4Observe the Display ................................................................... 3-5Respond to Traffic Advisories ...................................................... 3-6

SKY899A Pilot’s Guidevi

Section PageTable of Contents (continued)

Turn Off the SKY899A .............................................................. 3-6Failure Response ........................................................................ 3-6

Chapter 4, Principles of Operation ............... 4-1Introduction .............................................................................. 4-1Sensitivity Levels ........................................................................ 4-1

Sensitivity Level A ................................................................. 4-1Sensitivity Level B ................................................................. 4-3

Audio Inhibit, SKY899A ............................................................ 4-5Audio Inhibit, GPWS, EGPWS, or TAWS .................................. 4-5TA Symbol Duration ................................................................. 4-6Ground Intruder Filtering .......................................................... 4-6Interference Limiting ................................................................. 4-6Future ADS-B ........................................................................... 4-6

Chapter 5, Display Interpretation................. 5-1Introduction .............................................................................. 5-1

Chapter 6, Specifications ........................... 6-1

SKY899A Pilot’s Guide vii

List of IllustrationsFigure Title Page

1-1 SKY899A Major Components ........................................................... 1-11-2 Typical SKYWATCH HP Screen ....................................................... 1-21-3 System Block Diagram ...................................................................... 1-31-4 Typical Vertical Display Modes and Traffic Zones ................................ 1-6

2-1 Typical Screen Elements .................................................................... 2-22-2 Vertical Display Mode Indicator Lamps .............................................. 2-5

3-1 Typical In-Flight Traffic Screen .......................................................... 3-23-2 Typical Test Screen ............................................................................ 3-33-3 Typical Traffic Screen on the Ground ................................................. 3-3

4-1 TA Zones If Your Aircraft Has a Radio Altimeter ................................. 4-44-2 TA Zones If Your Aircraft Has No Radio Altimeter, But Does Have a

Retractable Landing Gear .................................................................. 4-44-3 TA Zones If Your Aircraft Has No Radio Altimeter

and a Fixed Landing Gear .................................................................. 4-54-4 Future ADS-B-Based Free Flight Environment ................................... 4-7

5-1 TA & PA on 15 nmi Range, UNR Mode ........................................... 5-15-2 Other Traffic on 15 nmi Range, UNR Mode ...................................... 5-25-3 Other Traffic on 6 nmi Range, NRM Mode........................................ 5-25-4 TA & PA on 2 nmi Range, BLW Mode .............................................. 5-25-5 Off-Scale TA on 2 nmi Range, ABV Mode ......................................... 5-35-6 Standby Indicator .............................................................................. 5-35-7 SKY899A Failed Indicator ................................................................. 5-3

4-1 Fourteen Situations in Which a Traffic Advisory Will Occur ................ 4-2

6-1 TRC899 Specifications ...................................................................... 6-16-2 NY156 Directional Antenna Specifications ........................................ 6-3

Table Title PageList of Tables

SKY899A Pilot’s Guide ix

Abbreviations & AcronymsABV AboveAck AcknowledgeADS-B Automatic Dependent Surveillance-BroadcastAFS Flight Standards ServiceAGL Above Ground LevelAHRS Attitude and Heading Reference SystemARINC Aeronautical Radio, Inc.ATC Air Traffic ControlATCRBS Air Traffic Control Radar Beacon SystemATI Air Transport IndicatorATM Air Traffic ManagementBLW BelowCPA Closest Point of ApproachCRT Cathode Ray TubeEFIS Electronic Flight Instrument SystemEGPWS Enhanced Ground Proximity Warning SystemFAA Federal Aviation Administrationfpm Feet Per MinuteFSAW Flight Standards Information Bulletin for AirworthinessGPS Global Positioning SystemGPWS Ground Proximity Warning SystemHP High PerformanceI/O Input/OutputIVSI Instantaneous Vertical Speed Indicatorkn KnotsMFD Multi-Function DisplayMod ModificationMSG MessageNav Navigationnm Nautical Miles (on the display)nmi Nautical Miles (in the text)NRM NormalOPR OperateOT Other Traffic

SKY899A Pilot’s Guidex

Abbreviations & Acronyms (continued)

PA Proximity AdvisoryRev RevisionRGC Radar Graphics ComputerRTCA Requirements & Technical Concepts for AviationSLA Sensitivity Level ASLB Sensitivity Level BSSR Secondary Surveillance RadarSTB StandbySTC Supplemental Type CertificateTA Traffic AdvisoryTAWS Terrain Awareness and Warning SystemTCAS Traffic Alert and Collision Avoidance SystemTRC Transmitter Receiver ComputerTSO Technical Standard OrderUNR Unrestricted

SKY899A Pilot’s Guide 1-1

System DescriptionC h a p t e r 1

General DescriptionThe SKYWATCH®HP Traffic Alert & Collision AvoidanceSystem I (TCAS I), model SKY899A, from L-3 Avionics Systems,monitors the airspace around your aircraft and advises the flightcrew where to look for transponder-equipped aircraft that maypose a collision threat. The SKY899A displays traffic informationon one or more displays. The traffic information generallyincludes the range, relative bearing, and relative altitude ofintruder aircraft. The SKY899A also makes aural announcementssuch as traffic advisories on the cockpit audio system. TheSKY899A is intended for use by high performance corporate andgeneral aviation aircraft including rotorcraft. Figure 1-1 shows themajor components of the SKY899A.

Figure 1-1. SKY899A Major Components

Directional AntennaTRC

Chapter 1 – System Description

SKY899A Pilot’s Guide1-2

Figure 1-2. Typical SKYWATCHHP Screen

Transmitter Receiver Computer (TRC)The TRC is the primary unit of the SKY899A. It converts signalsfrom the directional antenna and from other aircraft systemsinto an on-screen picture of intruder aircraft locations, and ifnecessary, aural traffic advisories. The TRC can track up to 35intruder aircraft simultaneously, but to reduce clutter, typicaldisplays only display the 8 to 12 most threatening intrudersbeing tracked. The TRC also has built-in test equipment todetect faults and to verify proper operation.

Directional AntennaThe directional antenna transmits omnidirectional mode Cinterrogations and receives directional replies from other transpon-der-equipped aircraft in the vicinity. The antenna will also be ableto receive ADS-B mode S extended squitter broadcasts fromintruder aircraft in the future when ADS-B becomes standardized.

Display (Not Supplied)The SKY899A displays traffic on a growing number of Multi-Function Displays (MFDs) and Electronic Flight InstrumentSystem (EFIS) displays from companies such as Avidyne, UPSAT,L-3 (i-linc™ MFD), and Collins, or on select InstantaneousVertical Speed Indicators (IVSIs) from Honeywell or Sextant, oron a compatible weather radar indicator via the L-3 AvionicsSystems Radar Graphics Computer, model RGC250 EI orRGC350. Check with your dealer or with L-3 Avionics Systemsfor a current list ofapproved TCAS I-compatible displays.

Figure 1-2 shows atypical SKYWATCH HPscreen. Traffic screens onyour particular displaymay not match thefigures shown in thisguide. Refer to your

TRC, Antenna, & Display

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display manual for a detailed description of how your displaydisplays SKY899A traffic information.

Along with your display, you will also have a customer-suppliedon/off switch for the SKY899A and discrete buttons for selectingrange, vertical display mode, operate/standby, and test if thedisplay cannot provide these functions.

Interaction of Major ComponentsFigure 1-3 and the related notes on the next page show how themajor components of the SKY899A connect to each other andto other aircraft systems.

Interaction of Major Components

Figure 1-3. System Block Diagram

AircraftAudio

System Aircraft Power

Auxiliary Serial Data (RS-422)

Auxiliary Serial Data (RS-232)

Auxiliary ARINC 429 Data

Bi-directional Discrete I/O

SKYWATCH Display (ARINC 429)

SKYWATCH Display (ARINC 429)

SKYWATCH Control

On/Off Control

SKYWATCH Control

OR

Barometric Altitude

ABV & BLWIndicator Lamp Outputs

Discrete Lamp Control

System SoftwareUpdates

DiagnosticCommands andStatus (RS-232)

Flight Data& SystemConfiguration

ConfigurationSettings

Radio Altimeteror Flight Data

Computer(Optional)

FutureEnhancements

MFD/EFIS/IVSIDisplay

7

Radar Indicator7

via RGC250 EIor RGC350

DiagnosticEquipment e.g.

Laptop (Optional)

ABV & BLWIndicator Lamps

8

Operate Lamp(Optional)

Squat Switch(Optional)

GPWS/TAWS(Optional)

Landing GearSwitch (Optional)

Synchro XYZCompass, or

AHRS (Optional)

AircraftSuppression Bus

GPS NavigationSystem (Optional)

Radio Altitude1

TRC

+28 V dcAural TA's & Other Audio Output

Magnetic Heading

Mag. Heading Valid

TX/RX Inhibit

GPS Nav Data(ARINC 429)

LandingGear Position

Audio Inhibit

Weight On Wheels

DirectionalAntenna

Control Panel foruse with

DisplayMFD/EFIS/IVSI or

Radar6

Air Data Computer(Optional)

Encoding Altimeter

SKY899A

Intruder Aircraft

Flash Card

3

4

2

5

TransponderInterrogations

TransponderInterrogations

RepliesTransponder

RepliesTransponder

ConfigurationModule



Interaction of Major Components

Notes on Figure 1-3:1. The optional radio altitude input affects the SKY899A

audio inhibit feature, the ground intruder filteringfeature, and the sensitivity levels feature. (See chapter 4for details.)

2. GPS navigation (nav) data is required if you plan on usingSKY899A’s ADS-B feature in the future (when ADS-Bbecomes standardized) for intruder location enhancement.It’s also used in certain sensitivity level calculations. (Seechapter 4 for details.)

3. The SKY899A works without a heading input, but experi-ences degraded performance during high-rate-of-turnmaneuvers.

4. Having a weight-on-wheels input allows the SKY899A toautomatically switch out of standby when you take off,and into standby when you land.

5. The SKY899A may be installed on aircraft with fixedlanding gear. The optional landing gear position inputaffects the sensitivity levels feature and the SKY899A audioinhibiting feature. (See chapter 4 for details.)

6. The control panel consists of only a power switch ifyou’re using only a radar indicator via an RGC250 EI/RGC350. The size, scale, scope, and implementation of thecontrol panel depends on the type and number of displaysinstalled.

7. Use a radar indicator via an RGC250 EI/RGC350, or anMFD/EFIS/IVSI display, or multiple displays.

8. Only required when using a display that doesn’t displayvertical display mode indications.



Functional Description

Functional DescriptionThe SKY899A is an active system that operates as an aircraft-to-aircraft interrogation device. The SKY899A interrogates aircrafttransponders in the surrounding airspace (within a 35 nmihorizontal radius) similar to the way ground-based radarinterrogates aircraft transponders. When the SKY899A receivesreplies to its interrogations, it computes the respondingaircraft’s range, relative bearing, relative altitude, and closurerate. (In the future, when ADS-B becomes standardized, theSKY899A will also be able to receive any ADS-B broadcasts fromthe responding aircraft and use that information along withyour own aircraft Global Positioning System [GPS] nav data toenhance the computed relative position of the respondingaircraft.) The SKY899A then predicts collision threats and sendstraffic display information to the display.

Figure 1-4 shows the typical SKY899A vertical display modes(look up, look down, normal, and unrestricted). (Some modesmay not be available on your display.) The figure also showsthe traffic zones around your aircraft and the typical trafficsymbols that appear on the display when intruding aircraftenter one of those zones.

A solid amber circle is the visual part of the Traffic Advisory(TA) that the SKY899A generates when it predicts that anintruder aircraft may pose a collision threat. The aural part ofthe TA, “traffic, traffic,” is annunciated over a cockpit speakeror headset. An open white diamond represents Other Traffic(OT) that does not pose an immediate collision threat. A solidwhite diamond represents traffic that generates a ProximityAdvisory (PA), i.e., traffic that is close, but does not pose animmediate collision threat.

The SKY899A uses either Sensitivity Level A (SLA) or SensitivityLevel B (SLB) to determine when to display a TA. In general,SLB is used during the in-flight phase and SLA is used duringtakeoff and landing. Sensitivity levels and other factorsaffecting the display of traffic symbols are discussed in detail inchapter 4.



Functional Desccription

Figure 1-4. Typical Vertical Display Modes and Traffic Zones

0.2 nmi

0.55 nmi

+2700 ft†

–2700 ft†

+9000 ft†

+9900 ft

Intruder Aircraft

–9000 ft†

–9900 ft†

*15 seconds for non-altitude reporting intruder aircraft

Not To Scale

+800 ft

+1200 ft

–800 ft

–1200 ft

+600 ft

–600 ft

15 nmi

Sensitivity Level A

Look

Dow

n (B

LW)

Look

Up

(AB

V)

Nor

mal

(N

RM

)

0 ft

**20 seconds for non-altitude reporting intruder aircraft

†These vertical display mode numbers may vary depending on the display

Refer to chapter 4 for details.

*

**Unr

estr

icte

d (U

NR

)

+9900 ft†up to 35 nmi

CPA – Closest Point of Approach

4 nmi

– Traffic Advisory (TA)– Proximity Advisory (PA)– Other Traffic (OT)

up to 35 nmi

up to 35 nmi



Features

Features• Tracks up to 35 intruder aircraft (typical displays show only

the 8 to 12 most threatening intruders being tracked)

• Tracks intruder aircraft approaching at closure rates up to1200 knots

• Certified as a TCAS I

• Costs only a fraction of the price of a traditional TCAS I or II

• Does not require a mode S transponder

• Typically provides for the display of traffic information infour vertical display modes: normal (±2,700 ft), look up(+9,000 ft to –2,700 ft), look down (+2,700 ft to –9,000 ft), andunrestricted (±9,900 ft). These numbers may vary dependingon the display.

• Generates visual and aural advisories of aircraft that may posea collision threat

• Performs automatic and operator-initiated self tests

• Supports multiple simultaneous displays

• Transmits interrogations from the ground (if desired) as wellas from the air

• Uses only one antenna

• Displays traffic on a variety of MFD, EFIS, and IVSI displays aswell as radar indicators (radar indicators via the RGC250 EI orRGC350)

• Anticipates the future ADS-B-based Free Flight environmentby being ADS-B-ready, i.e., it will be able to use informationfrom ADS-B broadcasts (if available) along with own aircraftGPS nav data to enhance intruder location computation. ADS-B surveillance will not be active in the SKY899A until ADS-B isstandardized by the aviation community and the FAA, at whichtime you may be able to get a software upgrade from L-3Avionics Systems to activate all of SKY899A’s ADS-B features.


Typical Controls &Indicators

C h a p t e r 2

IntroductionThis chapter describes the typical controls, indicators, screenelements, and aural announcements associated with the SKY899A.

Control Panel (Not Supplied)A discrete control panel provides a power switch for theSKY899A and the functions listed below (as needed) for displaysthat cannot provide these functions on their own. (If you’reusing only a radar indicator via the RGC250 EI/RGC350 as yourdisplay, the control panel will consist of only a power switch.)

Power SwitchThis switch controls power to the SKY899A.

Operating Mode SwitchThis switch toggles the SKY899A back and forth betweenoperating mode and standby.

Display Range SwitchThis switch toggles the SKY899A display range between theavailable display ranges.

Vertical Display Mode SwitchThis switch changes the SKY899A vertical display modebetween above, normal, below, and unrestricted.

Test SwitchThis switch starts an operator-initiated self test.

Chapter 2 – Typical Controls & Indicators


Typical Screen ElementsFigure 2-1 and the following paragraphs describe typical screenelements for the SKY899A. Note that the range rings and ownaircraft symbol can be white if the PAs and OTs are cyan.

Traffic Advisory (TA) A TA consists of a symbol on-screen and a “traffic, traffic” message on the cockpitspeakers or headset. When an intruder aircraft thatmeets the TA criteria described in chapter 4 is within thedisplayed range (inside or outside of the selected verticaldisplay mode), the corresponding symbol is this filledamber circle located at a position on the screen thatindicates the relative bearing and range of the intruderaircraft.

In general, the SKY899A issues a TA when it detects anintruder aircraft within 30 seconds of a possible colli-sion, or within a 0.55 nmi horizontal radius and a ±800ft relative altitude range of your aircraft. (See chapter 4for details.)

Off-Scale Traffic Advisory (TA) Either a symbolsuch as this, or a text message, such as “OS” or “OFFSCALE” is displayed to identify a TA that has beendetected beyond the current display range. In thisexample, this symbol is displayed at a position along the

Typical Screen Elements

Figure 2-1. Typical Screen Elements

UNR 6 nm

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+80

+03+05

RangeRings

Off-Scale

TA)Traffic

Advisory (

TrafficAdvisory (TA)

ProximityAdvisory (PA)

VerticalTrend Arrow

OwnAircraft

Data Tag

OtherTraffic (OT)

VerticalDisplay Mode

Indicator

DisplayRange

Indicator



outer range ring that indicates the relative bearing of theintruder aircraft.

Proximity Advisory (PA) This white or cyansymbol represents an intruder aircraft that has notgenerated a TA, but which is within a horizontal rangeof 4 nmi and a relative altitude of ±1200 ft.

Other Traffic (OT) This white or cyan symbolrepresents an intruder aircraft that has been detectedwithin the selected display range and vertical displaymode, but which has not generated a TA or a PA.

On some displays, OT symbols disappear when a TAoccurs, and reappear (if still in range) once the TA goesaway. Some displays can also be strapped to filter out allOT symbols.

Data Tag Typically, some sort of numerical tagsuch as this is associated with the traffic symbol toindicate the altitude or relative altitude of theintruder. In this example, the two digits indicate,in hundreds of feet, the relative altitude of theintruder aircraft (3500 feet below you). Non-altitude-reporting aircraft are considered to be atthe same altitude as your aircraft

Vertical Trend Arrow A vertical trend arrow suchas this may be displayed with a traffic symbol to indicatethat the intruder aircraft is ascending (up arrow) ordescending (down arrow) faster than 500 fpm.

Own Aircraft Typically a cyan or white symbolsuch as this is near the center of the screen to representyour aircraft’s relative position and heading.

Range Rings Cyan or white range rings suchas these help you to quickly locate traffic.

Display Range Indicator Typically an indicatorsuch as this identifies the current display range.

Vertical Display Mode Indicator Typically anindicator such as this identifies the current vertical

Typical Screen Elements

UNR

6nm

- 3 5



Discrete Indicator Lamps

display mode with abbreviations such as ABV (above/look up), BLW or BLO (below/look down), NRM orblank (normal), or UNR (unrestricted) (sometimesshown as A/B or ABV/BLW). (See figure 1-4.)

Standby Indicator A standby indicatorsuch as this is typically displayed to indicatethat the SKY899A is in standby. In standby, theSKY899A does not interrogate, process, ordisplay traffic. This message does not mean theSKY899A has been turned off (powered down).It is also possible for the display to displayTCAS OFF instead of TCAS FAIL after a self testfailure on the ground.

Self Test Indicator An indicator such as this istypically displayed to indicate that the SKY899Aoperator-initiated self test is in progress.

SKY899A Failed Indicator An indicatorsuch as this is typically displayed to indicatethat the SKY899A is not powered up, or hasfailed, or has failed the operator-initiated selftest. When displayed to indicate that theSKY899A is not powered up, the messagetypically stays on the display for severalseconds after the SKY899A is turned on. It isalso possible for the display to display TCASOFF instead of TCAS FAIL after a self testfailure on the ground.

TA ONLY Indicator Whenever the SKY899Ais on and not displaying a failure and not instandby, some displays will display TA ONLY toindicate that the display is connected to a TCASI system instead of a TCAS II system. Theimplication is that no resolution advisories willbe issued. On some displays, when an active TAis detected, the background color of the TAONLY indicator changes from white to amber.

TCAS OFF

TEST

TCAS FAIL

TA ONLY



Figure 2-2. Vertical Display Mode Indicator Lamps

Discrete Indicator LampsVertical Display Mode Indicator Lamps (Not Supplied)

Some displays do not display a vertical display mode indicatoron-screen. For those displays, the SKY899A supports twodiscrete indicator lamps similar to those shown in figure 2-2 toindicate the current vertical display mode.

Operate Lamp (Optional, Not Supplied)

This panel-mounted indicator light is lit whenever the SKY899Ais sending out interrogations. The light is not lit in standby orwhen the unit is in failed mode.

Aural Announcements“Traffic, Traffic” This aural component of a traffic advisoryis announced once over the cockpit speakers or headset when aTA is first detected. (This announcement is not made if theSKY899A audio is inhibited. See page 4-5 for details.)

“SKYWATCH System Test Passed” This message isannounced once over the cockpit speakers or headset after theSKY899A has passed an operator-initiated self test.

“SKYWATCH System Test Failed” This message isannounced once over the cockpit speakers or headset after theSKY899A has failed an operator-initiated self test.

Aural Announcements


OperatingInstructions

C h a p t e r 3

IntroductionThis chapter lists the SKY899A operating instructions anddescribes its fault modes.

Turn On the SKY899ATo avoid power surges that could damage the SKY899A, start yourengines before turning on the SKY899A.

Federal aviation regulations require that, if installed, TCASequipment be turned on during all flight operations. As such, theSKY899A may be turned off only when it is inoperable or when, inthe opinion of the pilot-in-command, continued operation wouldbe more appropriately assured with the SKY899A turned off.

The SKY899A must be turned off if ATC advises the flight crew todisable transponder altitude reporting.

1. Use the SKY899A power switch to turn on the SKY899A.

The SKY899A begins its power-on self test. Typically a TCASFAIL indicator remains on the screen for a few seconds andis then replaced by a standby indicator such as TCAS OFF.

If the SKY899A passes the test, and your aircraft has a squatswitch, and your aircraft is on the ground, the display willcontinue to display the TCAS OFF (standby) indicator.

If the SKY899A passes the test, and your aircraft has a squatswitch, and your aircraft is in the air, a traffic screen similarto figure 3-1 appears.

CAUTION

NOTE

NOTE

Chapter 3 – Operating Instructions


If the SKY899A passes the test and your aircraft does nothave a squat switch, the display will continue to display theTCAS OFF (standby) indicator.

In standby, the SKY899A waits 5 minutes for critical sensorssuch as the barometric altimeter to warm up and come online before it displays a TCAS FAIL message or other messageindicating the lack of the sensor input; however, if youswitch into operating mode, the SKY899A only waits 2seconds for the sensor inputs before it displays a message.

If a TCAS FAIL message appears, refer to the Failure Re-sponse section on page 3-6. For installations with an ARINC429 barometric altitude input, turning on the SKY899Aduring flight may cause a temporary TCAS FAIL messagewhile the system is syncing up to the 429 data source.

Run the Operator-Initiated Self TestIt is recommended, but not required that you run the opera-tor-initiated self test before the first flight of the day andwhenever you get a TCAS FAIL message.

1. With the SKY899A in standby or failed mode, use the testswitch or menu selection to start the self test.

The SKY899A begins its self test and a test screen similar tofigure 3-2 with certain artificial traffic symbols appears.Upon successful completion of the self test, you will hear“SKYWATCH system test passed” and the display will revertto the previous standby screen.

Run the Self Test

Figure 3-1. Typical In-Flight Traffic Screen

UNR 35nm

- 0 7

- 3 5

+80

+03



Switch to Operating Mode

2. If you hear “SKYWATCH system test failed,” or see a TCASFAIL message, or you don’t see the test screen, run the testagain. If it fails again, refer to the Failure Response sectionon page 3-6.

Switch Between Standby & Operating ModeWhen you’re on the ground, you must manually switch out ofstandby if you want the SKY899A to display traffic information.The ability to switch out of standby on the ground in conjunc-tion with the above display mode is especially useful forscanning the airspace around the airport before takeoff.

1. Use the operating mode switch or menu selection to manu-ally switch into operating mode from standby.

The SKY899A switchesout of standby intooperate and displays atraffic screen similarto figure 3-3. Thestandby indicator(e.g. TCAS OFF) goesaway and may bereplaced by a TAONLY indicator.

If your aircraft has asquat switch and youdon’t manually switchout of standby, the

Figure 3-3.Typical Traffic Screen onthe Ground

ABV 6 nm

+ 0 7

+10

+94

+04

Figure 3-2. Typical Test Screen

6nmNRM

TEST

- 10

+ 10

-02



SKY899A automatically switches out of standby 8 to 10seconds after takeoff.

2. Use the operating mode switch or menu selection to manu-ally switch into standby from the traffic screen.

The SKY899A goes into standby and the display switchesback to the standby message (e.g. TCAS OFF replaces TAONLY). If your aircraft has a squat switch, the SKY899A willnot go into standby while airborne.

If your aircraft has a squat switch, the SKY899A also goesinto standby automatically, 24 seconds after landing. Thisdelay allows the SKY899A to remain out of standby during atouch-and-go maneuver.

Change the Display RangeYou can change the display range when the SKY899A is inoperating mode.

1. Use the display range switch or menu selection to toggle thedisplay range between the available display ranges.

The screen changes to display the traffic detected within thechosen display range. The numerical value of the chosendisplay range is displayed on the screen.

The SKY899A continues to track up to 35 intruder aircraftwithin its maximum horizontal surveillance range (35 nmiradius) regardless of the display range selected.

Change the Vertical Display ModeYou can change the vertical display mode when the SKY899A isin operating mode.

1. Use the vertical display mode switch or menu selection totoggle between the available modes, typically above, normal,below, and unrestricted.

The screen changes to display the traffic detected within thechosen vertical display mode (figure 1-4). The name orabbreviation of the chosen vertical display mode, such asABV, NRM, BLW, or UNR, is displayed on the screen orindicated by discrete indicator lamps as described on page 2-5.

Change the Display Range



The SKY899A continues to track up to 35 intruder aircraftwithin its maximum vertical surveillance range (±10,000 ft)regardless of the vertical display mode selected.

Observe the DisplayThe SKY899A relies on information obtained from transponders innearby aircraft. The SKY899A does not detect or track aircraftwhich are not equipped with an operating Air Traffic ControlRadar Beacon System (ATCRBS) transponder.

The SKY899A does not track intruder aircraft approaching at aclosure rate greater than 1200 knots.

Some traffic within the chosen display range may not be displayeddue to traffic prioritizing, antenna shielding, ground intruderfiltering, interference limiting, or surveillance range being shorterthan the chosen display range.

Optimum SKY899A performance is realized when intruder aircraftare reporting their altitude (via a mode C or other altitudereporting transponder).

Monitor the activity of any traffic displayed. Keep in mind thefollowing points when watching traffic on the display:

• Traffic Prioritizing – The SKY899A tracks up to 35intruder aircraft simultaneously, but to reduce clutter,most displays display only the 8 to 12 most threateningaircraft of those tracked.

• Ground Intruder Filtering – If a radio altimeter isconnected to the SKY899A, no traffic symbols aredisplayed for traffic detected under 380 ft Above GroundLevel (AGL) when your aircraft is below 1,700 ft AGL.

• On some displays, OT symbols disappear when a TAoccurs, and reappear (if still in range) once the TA goesaway.

• Some displays can be strapped to filter out all OTsymbols.

• Refer to chapter 4 for a description of the TA criteria andother factors that affect the display of traffic symbols.

Observe the Display

CAUTION

WARNING

WARNING

WARNING



Respond to Traffic AdvisoriesDo not attempt evasive maneuvers based solely on traffic informa-tion on the display. Information on the display is provided to theflight crew as an aid in visually acquiring traffic; it is not areplacement for Air Traffic Control (ATC) and See & Avoidtechniques.

When the SKY899A issues a TA, look outside for the intruderaircraft. When you spot an intruder aircraft, use normal right-of-way procedures to maintain separation.

Turn Off the SKY899AUse the SKY899A power switch to turn off the SKY899A.

Failure ResponseAll errors indicated by a TCAS FAIL message prevent theSKY899A from performing its collision warning functions;however, some errors are recoverable. For example, if you turnon and try to operate the SKY899A before you turn on thebarometric altitude source or before it comes on line, a TCASFAIL message appears and continued operation of the SKY899Ais not possible; but when you eventually turn on the baromet-ric altitude source and it comes on line, the TCAS FAIL messagedisappears and operation returns to normal.

If you see a TCAS FAIL message, respond as follows:

1. Make sure the barometric altitude source has been turnedon and given enough time to warm up.

Many errors are due to the failure of equipment external tothe SKY899A.

2. Use the test switch or menu selection to run a self test tosee if the system is still failed.

3. If the system is still failed, remove power from the SKY899Aat the circuit breaker.

4. Contact your authorized L-3 Avionics Systems dealer fortroubleshooting help.

Failure Response

WARNING


Principles ofOperation

C h a p t e r 4

IntroductionThis chapter describes Traffic Advisory (TA) criteria and otherfactors that affect the display of traffic symbols including ADS-B (which will affect the display in the future once the technol-ogy is standardized). Table 4-1 on the next page summarizesthe criteria necessary for the SKY899A to display a TA.

Sensitivity LevelsThe SKY899A uses one of two sensitivity levels, A or B, todetermine when to display a TA. Having two sensitivity levelsallows the SKY899A to reduce the number of nuisance TAsduring takeoff and landing (sensitivity level A), and to maxi-mize the detection of TAs during the cruise phase of flight(sensitivity level B).

Sensitivity Level ASensitivity level A consists of two criteria for displaying a TA:

1. The intruder aircraft enters into a cylinder of airspacesurrounding your aircraft defined by a 0.2 nmi horizon-tal radius and a height of ±600 ft from your aircraft.(See figures 4-1 through 4-3.)

OR…2. The intruder aircraft approaches your aircraft on a

course that will intercept your aircraft within 15 or 20seconds (within 15 seconds for a non-altitude reportingintruder aircraft; within 20 seconds for an altitudereporting intruder aircraft).

Chapter 4 – Principles of Operation


TA Criteria

Table 4-1. Fourteen Situations in Which a Traffic Advisory Will Occur

* Having a radio altimeter means having a compatible radio altimeter wired to the SKY899Aand providing valid altitude information.

** CPA means Closest Point of Approach.*** Ground speed is not available whenever your GPS navigation information is not available.

Sensitivity Level A Sensitivity Level B

The SKY899A Will Issue a Traffic Advisory…

No.If Your

Aircraft…

And YourAircraft’s

Altitude Is…

And YourLanding

Gear Is…

And YourGround Speed

Is…

And An IntruderAircraft IsDetected…

1 has a radioaltimeter*

below 2000 ftAGL

within a 0.2 nmihorizontal radius and a±600 ft relative altitude

2 within 15–20 sec.of CPA**

3 above 2000 ftAGL



5 does nothave a radioaltimeter*

down within a 0.2 nmihorizontal radius and a±600 ft relative altitude


7 up within a 0.55 nmihorizontal radius and a±800 ft relative altitude


9 fixed not available*** within a 0.55 nmihorizontal radius and a±800 ft relative altitude


11 available andgreater than orequal to 120 knots



13 available and lessthan 120 knots





The SKY899A uses sensitivity level A in the following situations(corresponds to numbers 1, 2, 5, 6, 13, and 14 in table 4-1):

1. Your aircraft has a radio altimeter and is below 2,000 ftAGL.

2. Your aircraft has no radio altimeter but its retractablelanding gear is down.

3. Your aircraft has no radio altimeter, a fixed landinggear, and your ground speed is available and is less than120 knots.

Sensitivity Level BSensitivity level B consists of two criteria for displaying a TA:

1. The intruder aircraft enters into a cylinder of airspacesurrounding your aircraft defined by a 0.55 nmihorizontal radius and a height of ±800 ft from youraircraft. (See figures 4-1 through 4-3.)

OR…2. The intruder aircraft approaches your aircraft on a

course that will intercept your aircraft within 20 or 30seconds (within 20 seconds for a non-altitude reportingintruder aircraft; within 30 seconds for an altitudereporting intruder aircraft).

The SKY899A uses sensitivity level B in the following situations(corresponds to numbers 3, 4, 7, 8, 9, 10, 11, and 12 in table 4-1):

1. Your aircraft has a radio altimeter and is above 2,000 ftAGL.

2. Your aircraft has no radio altimeter but its retractablelanding gear is up.

3. Your aircraft has no radio altimeter, a fixed landinggear, and your ground speed is not available.

4. Your aircraft has no radio altimeter, a fixed landinggear, and your ground speed is available but is greaterthan or equal to 120 knots.

Sensitivity Levels



TA Zones

0.2 nmi +600 ft

–600 ftThis area or 20 seconds*

0.55 nmi +800 ft


*

**15 seconds for non-altitude reporting intruder aircraft*20 seconds for non-altitude reporting intruder aircraft Not to scale

Intruder aircraft

GL

If ownaircraftis below1,700 ftAGL

If ownaircraftis below400 ftAGL

2,000feet

Groundintruders

below380 ft

AGL arefiltered

outTA zone whenown aircraft isbelow 2,000 ft

(sensitivity level A)

TA zone whenown aircraft isabove 2,000 ft

(sensitivity level B)

SKY899A audiois inhibited

Figure 4-2.TA Zones If Your Aircraft Has No Radio Altimeter, But Does Havea Retractable Landing Gear

Figure 4-1. TA Zones If Your Aircraft Has a Radio Altimeter

0.2 nmi +600 ft


0.55 nmi +800 ft


*


Intruder aircraft

GL

TA zonewhen landing gear is up

(sensitivity level B)

TA zonewhen landing gear is down

(sensitivity level A)

SKY899A audioinhibited when landing

gear is down



Audio Inhibit, SKY899AThis audio inhibit feature prevents the aural part of TAs,“traffic, traffic,” from being announced during takeoff andlanding in order to minimize pilot distraction. The corre-sponding TA symbols are still displayed.

The SKY899A uses this audio inhibit feature in the followingsituations:

1. Your aircraft has a radio altimeter and you’re below 400ft AGL. (See figure 4-1.)

2. Your aircraft has no radio altimeter but its retractablelanding gear is down. (See figure 4-2.) (Audio is notinhibited if you have fixed landing gear and no radioaltimeter.)

Audio Inhibit, GPWS, EGPWS, or TAWSIf your aircraft has a Ground Proximity Warning System(GPWS), Enhanced GPWS (EGPWS), or Terrain Awareness andWarning System (TAWS) interfaced with the SKY899A and analarm from one of those systems occurs, the SKY899A senses thealarm and delays the aural “traffic, traffic” component of anyTAs issued until the alarm clears.

Audio Inhibit

Figure 4-3.TA Zones If Your Aircraft Has No Radio Altimeterand a Fixed Landing Gear

0.2 nmi +600 ft


0.55 nmi +800 ft


*


Intruder aircraft

GL

TA zonewhen your ground

speed is unavailable,or when your groundspeed is available,

but is greater than orequal to 120 knots(sensitivity level B)

TA zonewhen your ground speed

is available and isless than 120 knots(sensitivity level A)



TA Symbol DurationA TA symbol remains on the screen for at least 8 seconds, evenif the intruder aircraft no longer meets the TA criteria, as longas the SKY899A continues to track the aircraft.

Ground Intruder FilteringGround intruder filtering reduces the clutter of visual symbolsand aural announcements that would otherwise be generatedfor intruder aircraft typically present on or near the groundnear airports.

For intruder aircraft determined to be below 380 ft AGL,ground intruder filtering prevents the display of all trafficsymbols (TA, PA, & OT) and suppresses the “traffic, traffic”aural announcement. (See figure 4-1.)

The SKY899A uses ground intruder filtering only if youraircraft has a radio altimeter connected to the SKY899A andyou’re below 1,700 ft AGL.

Interference LimitingTo assure that all interference effects from active TCAS Iequipment are kept to a minimum, the FAA requires TCASequipment to “interference limit,” i.e. reduce its transmitpower, when it is operating in congested airspace. Thislimiting function is based on the number of TCAS interroga-tors detected via mode S broadcast reception and the reply rateof your transponder. Interference limiting reduces the effectivesurveillance range of the TCAS equipment and is independentof the display range selected; therefore, selecting a displayrange of 20 nmi does not guarantee a 20 nmi surveillance rangewhen operating in high density areas.

Future ADS-BUnlike the current ATC system of ground-based SecondarySurveillance Radar (SSR) interrogations and aircraft transpon-der replies, the ADS-B-based Free Flight Air Traffic Manage-ment (ATM) system of the future will depend more on aircraft-to-aircraft exchange of aircraft state information (figure 4-4).

Ground Intruder Filtering



ADS-B

The SKY899A anticipates the future Free Flight environment byincluding hardware and software that will continuouslymonitor the dedicated data link frequency (1090 MHz) for ADS-B mode S extended squitter messages within 50 nmi when ADS-B becomes standardized. These messages will be broadcast,without interrogation, from aircraft with ADS-B-capable modeS transponders. The SKY899A will not require a mode Stransponder, ADS-B-capable or otherwise, to perform its ADS-Bsurveillance.

An ADS-B message will contain nav data for the intruderaircraft including GPS position, ident, ground speed, andintent. The SKY899A will use this nav data along with its ownaircraft GPS nav data to calculate the relative position of theintruder to enhance its active ATCRBS surveillance of theintruder when ADS-B becomes standardized.

Figure 4-4. Future ADS-B-Based Free Flight Environment

Intruderaircraft

Own aircraft

GPS satelliteGPS satellite

ADS-Bsquittermessage

GPS satellite


DisplayInterpretation

C h a p t e r 5

IntroductionThis chapter explains the meaning of several typical screens.The abbreviation CPA used in some of the figures means closestpoint of approach.

Figure 5-1. TA & PA on 15 nmi Range, UNR Mode

UNR 15nm

- 0 7

+03

Traffic AdvisoryIntruder aircraft at1 o’clock, 2 nmiaway, 300 ft aboveyou, descending ata rate greater than500 fpm. CPA within20 to 30 seconds.

Proximity AdvisoryIntruder aircraft at4:30, 4 nmi away,700 ft below you,ascending at a rategreater than 500 fpm.No immediate threat.

Chapter 5 – Display Interpretation


Other Traffic & TAs

Figure 5-2. Other Traffic on 15 nmi Range, UNR Mode

Figure 5-3. Other Traffic on 6 nmi Range, NRM Mode

Figure 5-4. TA & PA on 2 nmi Range, BLW Mode

UNR 15nm

OtherTrafficNon-altitude-reportingintruder aircraft at10:30, 9 nmi away.No immediate threat.

OtherTrafficIntruder aircraft at8 o’clock, 11 nmiaway, 9,900 ft belowyou in level flight. Noimmediate threat.

- 9 9

OtherTrafficIntruder aircraft at5 o’clock, 4.5 nmiaway, at your altitude,ascending at a rategreater than 500 fpm.No immediate threat.

00

NRM 6nm

Traffic AdvisoryNon-altitude-reportingintruder aircraft at2 o’clock, 1 nmiaway. CPA within15 to 20 seconds.

Proximity AdvisoryIntruder aircraft at5 o’clock, 1.5 nmiaway, 1,000 ft aboveyou, ascending at arate greater than500 fpm. Noimmediate threat.

BLW 2nm

+ 10

Chapter 5 – Display Interpretation


Figure 5-5. Off-Scale TA on 2 nmi Range, ABV Mode

Figure 5-6. Standby Indicator

Figure 5-7. SKY899A Failed Indicator

Standby & Failed Screens

2nm

Off-Scale TAIntruder aircraft at9:30, more than2 nmi away. 500 ftabove you, descendingat a rate greater than500 fpm. CPA within20 to 30 seconds.

ABV

+05

TCAS OFF

Standby IndicatorWhen in standby, theSKY899A does nottransmit interrogationsor track intruderaircraft.

SKY899A FailedOccurs when theSKY899A is notpowered up, and anytime the SKY899Adetects an error thatprohibits furtheroperation of theSKY899A.

TCAS FAIL


SpecificationsC h a p t e r 6

Table 6-1. TRC899 Specifications*

Part Number Definition:805-11900-002

Size:Not including mounting tray:

7.62 in (19.36 cm) high3.56 in (9.04 cm) wide12.52 in (31.90 cm) deep

Weight:Not including mounting tray:

9.00 lb (4.08 kg)Including standard mounting tray:

9.88 lb (4.48 kg)Including ruggedized mounting tray:

11.01 lb (4.99 kg)

Tracking Capability:Up to 35 intruder aircraft

Surveillance Range:Horizontal tracking radius:

35 nmi maximum for ATCRBS surveillance50 nmi maximum for ADS-B surveillance (ADS-B surveillance will

not be active in the SKY899A until ADS-B is standardized by theaviation community and the FAA, at which time you may be ableto get a software upgrade from L-3 Avionics Systems to activateall of SKY899A’s ADS-B features.)

Relative altitude tracking range:±10,000 ft maximum

*Specifications subject to change without notice.(Continues on next page)

Chapter 6 – Specifications


TRC Specs (Continued)

Table 6-1. TRC899 Specifications* (Continued)

Vertical Display Mode Capability (typical numbers):(actual numbers and modes may vary depending on display type)±2,700 ft (normal mode)+9,000 ft to -2,700 ft (above mode/look up)+2,700 ft to -9,000 ft (below mode/look down)±9,900 ft (unrestricted mode)

Range Accuracy:0.05 nmi typical

Bearing Accuracy:5° RMS typical

Altitude Accuracy:±200 ft

Maximum Closure Rate:1200 knots

Power Input Requirements:18 to 32 V dc, 2 A maximum at +28 V dc

Transmitter Power Output:Peak 1030 MHz RF output power of 52 dBm (158.5 W) ±1dB

Operating Temperature:-55 to +70 °C (-67 to +158 °F)

Storage Temperature:-55 to +85 °C (-67 to +185 °F)

Operating Altitude:55,000 ft maximum

Cooling:Conduction and forced air convection (internal fan)

Certification Compliance:JAA JTSO-C118U.S. FAA TSO C118. Contact L-3 Avionics Systems for the latestforeign country certifications. Refer to the latest revision of FSAW98-04 for Flight Standards Service (AFS) policy concerning follow-on field approvals.

FCC:Part 87 (FCC identifier PMYTRC899)

RTCA Compliance:Environmental:

DO-160D Category[F2X]BAB[SBM]XXXXXXZBABA[RR]L[XXXX]XXA

Software:DO-178B Level D

*Specifications subject to change without notice.

Chapter 6 – Specifications


Part Number:805-10003-001

Size:1.30 in (3.25 cm) high6.25 in (15.88 cm) wide11.12 in (28.24 cm) deep

Weight:2.3 lb (1.04 kg)

Speed:Rated to 600 knots (0.9 Mach) @ 25,000 ft

Frequency:1,030-1,090 MHz

TSO Category:C118

Environmental Category:DO-160C F2-AC(CLM)XSFDFSXXXXXXXL(2A)X

Finish:Gloss white Skydrol®-resistant polyurethane paint

*Specifications subject to change without notice.

Table 6-2. NY156 Directional Antenna Specifications*

Antenna Specs

Record of Important Information

Dealer InformationName _______________________________________________

Address _____________________________________________

City, State, Zip ________________________________________

Telephone ___________________________________________

Equipment InformationDate of Purchase ______________________________________

Installation Date ______________________________________

TRC:

Model Number_____________________________________

Part Number ______________________________________

Serial Number _____________________________________

Mod Letter ________________________________________

Software Version ____________________________________

Antenna:

Model Number_____________________________________

Part Number ______________________________________

Serial Number _____________________________________

Mod Letter ________________________________________

Display (not supplied):

Model Number_____________________________________

Part Number ______________________________________

Serial Number _____________________________________

Mod Letter ________________________________________

To ensure that a new or repaired SKY899A meets the TSO, meetsforeign government certification requirements, and meets L-3 AvionicsSystems performance standards, your SKY899A must be installedand tested by an L-3 Avionics Systems authorized SKY899A dealer.

NOTE

SKY899A

009-11906-001 (Rev. B, 2/24/04)

L-3 Communications Avionics Systems, Inc.5353 52nd Street, S.E.Grand Rapids, MI 49512 USA(800)253-9525www.L-3com.com/as

This data is provided at no charge, or at cost, to thepublic and is considered publicly available, No LicenseRequired (NLR) as defined in the Export AdministrationRegulations (EAR) Part 734.7-11.

traffic alert & collision avoidance system i · model sky899a traffic alert & collision...

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