cardiff rnav cons doc draft 5 + bt+jbbt airport rnav consultation... · a safer and more efficient...
TRANSCRIPT
Foreword
Cardiff Airport connects Wales to the world, handling over a million passengers a year with 50 direct
routes available and more than 900 connecting destinations worldwide through hubs including
Amsterdam Schiphol, Dublin and Barcelona. In March 2013, Cardiff Airport was bought by the Welsh
Government and a strategy has been implemented which addressed every aspect of the business
including a number of improvements to enhance the customer experience.
This consultation is part of our commitment to keep the local community informed of advances in
technology which could impact on how aircraft navigate at Cardiff and other airports across the
World.
Area Navigation (RNAV) is at the heart of new technology with the potential to streamline air traffic
procedures, ultimately delivering fuel savings, reduced emissions and an improved noise environment
for people on the ground.
While its full utilisation may be some years in the future we believe that RNAV, which uses satellite-
based navigation systems to ensure more reliable, repeatable and predictable flight paths, is worth
investing in today. This document provides further details on the case for doing so, and explains the
procedures involved.
Thank you for taking an interest in Cardiff Airport, we are committed to listening to all responses as
part of this consultation. Debra Barber, Managing Director
Section 1 Introduction
This document describes the Cardiff Airport proposal to replicate, implement and eventually replace
the current final approach routes into Cardiff Airport with more accurately defined routes utilising the
improved capabilities of modern aircraft.
Section 2 explains what Area Navigation (RNAV) is, how it will be used, and its potential benefits. It
also clarifies the scope of the consultation.
Section 3 explains why this consultation is required and lists the stakeholders with whom we are
consulting.
Section 4 provides an overview of current operations at Cardiff Airport including diagrams illustrating
the tracks taken by aircraft approaching the airfield.
Section 5 sets out the proposed RNAV routes, which are designed to replicate the current tracks as
closely as possible.
Section 6 sets out environmental considerations.
Section 7 sets out how stakeholders should respond to the consultation and explains what will happen
next.
2. Introduction of RNAV at Cardiff Airport
This consultation concerns modernisation of the existing arrival routes to Cardiff Airport. The
existing routes used by aircraft (termed “conventional” routes) rely on 1950s technology of ground
based radio beacons. A well established and much more accurate form of navigation is
aRea NAVigation (RNAV) which uses a combination of satellite and ground-based navigation
technology to permit aircraft to follow a precisely defined path over the ground with far greater
accuracy than is possible with conventional routes. This in turn enables pilots to fly pre-determined,
predictable arrival profiles.
Aircraft today already use RNAV extensively to fly in our airspace, even though the existing
conventional routes have not been specifically designed for its use. Processes are underway at a
European level to make modernisation of the route system a legal requirement for the UK and other
European states by 2020. This will require all member states, including the UK, to upgrade routes to
the RNAV standards. This legislation will be enacted by UK mandates to be introduced by the Civil
Aviation Authority (CAA). The CAA is planning to mandate that all operators will have to be RNAV
1 approved by November 2017, and then require RNAV routes to be introduced by winter 2019.
Modernising our conventional routes is therefore mandatory and inevitable; this consultation concerns
how we intend to achieve this at Cardiff Airport with minimal impact to our stakeholders.
Cardiff Airport and its airline customers have identified an opportunity to introduce RNAV for the
final stages of the approach phase to the airport.
The Cardiff Airport airspace was thoroughly reviewed, redesigned and updated to suit the current and
anticipated future levels of traffic growth in 2006. This process considered the requirements of other
airspace users. Our proposals for the introduction of RNAV are based on updating the later stages of
approach routes through “replication” whereby the existing route alignment is preserved as much as
possible, whilst catering for the greater navigational accuracy of Performance Based Navigation
(PBN).
The use of RNAV across the UK will enhance navigational accuracy and should introduce a number
of key benefits. These include:
a safer and more efficient Air Traffic Control (ATC) system requiring less controller
intervention;
more efficient operations leading to reduced cost, flying time and emissions;
the ability to allow more predictable patterns of over flight as well as stabilised arrivals and
approaches which should generate less noise.
By giving pilots a defined flight path from beginning to end they can plan a descent which avoids
level segments, optimises power settings and speed in the descent, configures the aircraft for
minimum noise, reduces fuel burn and keeps the aircraft higher over the ground for longer. Such
operations are known as Continuous Descent Operations involving unbroken descent from
cruising altitude to the runway.
The introduction of RNAV replications of the current procedures will enable more effective and
reliable use of Continuous Descent Operations.
An aircraft must be certificated as having the appropriate navigation systems and flight crew training
before it can fly RNAV1 procedures. The operation of the Air Traffic Management system beyond
Cardiff will also affect the likely take-up of RNAV procedures in the immediate future. ATC at
Cardiff will still need to interact with arriving aircraft on a flight by flight, tactical basis, creating a
spread of aircraft tracks, similar to that experienced now. This is not predicted to change significantly
in the short term, until new arrival management tools are implemented on a pan-European basis.
However, over time, the new routes will become the primary inbound tracks flown by the majority of
aircraft.
The Civil Aviation Authority (CAA), with support from the Department for Transport (DFT), the
Ministry of Defence (MOD), NATS (the UK’s leading Air Navigation Service provider) and the Irish
Aviation Authority (IAA), has been leading work to develop the Future Airspace Strategy (FAS) for
the period to 2030. The CAA’s primary objective is to develop a “safe, efficient airspace that has the
capacity to meet reasonable demand, balances the needs of all users and mitigates the impact of
aviation on the environment”. This national strategy is aligned with the UK’s commitments under the
Single European Sky (SES) legislation, including implementation of the Single European Sky Air
Traffic Management Research (SESAR) programme.
The aim of this proposed change is to build on these UK and European initiatives, utilising the latest
navigation technology to enable modern aircraft to achieve the benefits mentioned above.
The proposal does not influence or change the number of aircraft able to use the airport and
traffic numbers are not expected to increase as a consequence of the change.
Note: throughout this document altitude or heights of aircraft are expressed as height above mean sea
level unless indicated otherwise.
3. Consultation
The purpose of this consultation is to obtain feedback from stakeholders who may be affected by or
have an interest in this proposal. Cardiff Airport has spoken with the CAA on the consultation process
and they have agreed that provided this airspace change proposal replicates the existing patterns of
aircraft arriving at Cardiff Airport today and does not introduce any additional residents to aircraft
noise or introduce new volumes of traffic, it is appropriate for the consultation process to include:
- The Cardiff Airport Consultative Committee which includes representatives of the local
community and other organisations that have expressed an interest in the activities of the
Airport;
- Local authorities in the neighbourhood of the airport or whose area of responsibility is
overflown by the routes which are to be affected but who are not already represented on
the Cardiff Airport Consultative Committee;
- Bristol City Council
- The Ministry of Defence;
- The airlines operating at Cardiff Airport; and
- Principal airspace users and stakeholders as represented on the National Air Traffic
Management Advisory Committee (NATMAC).
The consultation follows the procedures set out in CAP 725 and the Cabinet Office Code of Practice
on Consultation. This consultation document has been prepared by Cardiff International Airport
Limited with assistance from NATS.
The consultation period begins on 15th December 2014 and will run until 20th
March 2015. Details
of how to respond and the next steps can be found in Section 7.
4. Overview of current operations at Cardiff Airport
The Cardiff Airport runway is aligned south-east / north-west. The north westerly runway is
designated as runway 30 as aircraft landing on or taking off from the runway will be facing a magnetic
compass heading of 300° whilst the south easterly runway is designated runway 12. Aircraft generally
land and take-off into the wind which means that Runway 30 is the predominant runway direction,
being used by around 60% of aircraft movements1.
In 2013 approximately 14860 Instrument Flight Rules (IFR) aircraft arrived at Cardiff Airport. IFR
represents the majority of larger commercial aircraft operating at Cardiff. Of these, 39% (5795
aircraft) landed on runway 12, and 61% (9065 aircraft) landed on runway 30. The distribution of
arrivals by time of day is shown in Figure 1. This covers two months (January and August 2013) and
should be seen as indicative of the winter and summer schedules for Cardiff Airport.
Figure 1: Arrivals by Month and Time of Day
1 Based on total runway movements at Cardiff Airport for the calendar year 2013.
Runway 12 The routes taken by aircraft approaching runway 12 in July 2013 are shown in Figure 2, which uses a
flight path density plot to indicate aircraft tracks (the highest concentrations of aircraft are indicated by
the darker red colour). The heights of descending inbound aircraft along the densest arrival track are
shown indicatively on Figure 3.
These routes are positioned to avoid densely populated areas where possible, with aircraft from the
north routing just to the east of Bridgend and those from the south approaching over water and making
land fall in a sparsely populated area.
Figure 2: Density Plot of Current Runway 12 Arrival Tracks
Figure 3: Indicative Descent Heights for Current Runway 12 Arrivals
Runway 30
A similar plot of routes taken for aircraft approaching runway 30 during July 2013 is shown in Figure
4. These routes are over the Severn estuary and away from populated areas. The heights of the
descending inbound aircraft along the densest arrival track are shown indicatively in Figure 5.
The arrival routes from both the North and South are predominantly over water, with the route from
the north passing to the east of Flat Holm island and passing over Steep Holm island.
Figure 4: Density Plot of Current Runway 30 Arrival Tracks
Figure 5: Indicative Descent Heights for Current Runway 30 Arrivals
Missed Approach Procedures
A missed approach is a procedure followed by a pilot when an approach to an airport cannot be
completed to a landing and is often referred to as ‘going around’. The instructions for the missed
approach may be assigned by ATC prior to the clearance for the approach. If ATC has not issued
specific instructions prior to the approach and a ‘go around’ is executed, the pilot must follow the
(default) missed approach procedure specified for that runway.
.
Instrument approaches are designed with a specified missed approach procedure which includes a
height to climb to, a magnetic heading to fly and then a route to follow. At Cardiff the formal missed
approach procedures are designed so that an aircraft will climb straight ahead on the runway heading
to an altitude of 3000 feet and then turn to the north and continue in a loop back to the airport. Once
overhead the airport the aircraft will enter the airport holding pattern and await further instructions
from Air Traffic Control.
Illustrations of these procedures for both runways are given in
Figure 6 and Figure 7. It should be noted that these tracks are not fixed and are illustrative only, as the turn for
each procedure is initiated at 3000ft and this will occur at a different point for each aircraft depending upon how
quickly it climbs and reaches that altitude.
The default missed approach procedure is used vary rarely at Cardiff as a result of interaction between
the aircraft which is going around and other aircraft operating near to the airport. This means that Air
Traffic Controllers issue individual headings and heights to separate the aircraft carrying out the
missed approach from the other aircraft before positioning them for another second approach. As a
consequence of this ATC intervention, aircraft tracks for missed approaches over the ground rarely
follow the same route.
As an indicator of how infrequently aircraft go around at Cardiff airport, in 2013 there were a total of
33 missed approaches by IFR aircraft. This equates to 0.2% of the total IFR movements.
Figure 6: Conventional Missed Approach Runway 12
Figure 7: Conventional Missed Approach Runway 30
5. Proposed RNAV Routes
The proposed RNAV approaches have been designed to replicate the current aircraft tracks as closely
as possible in order to reduce additional impact to local residents. The proposed approaches are shown
in broad context in Figure 8 and then overlaid on the existing aircraft tracks in Figure 9. These
approaches are defined by a series of waypoints; those identified as the Initial Approach Fix (IAF) and
the Intermediate Fix (IF) being ‘fly-by’ points and the Final Approach Fix (FAF) being ‘fly-over’
points.
Aircraft will fly directly overhead a ‘fly-over’ point but will generally turn inside a fly-by way point,
using it as a reference about which to make a turn.
Figure 8: Proposed RNAV Routes
Figure 9: Proposed RNAV Routes Overlaid on Existing Aircraft Tracks
Runway 12 RNAV Approach The Proposed RNAV route for runway 12 is shown in more detail in Figure 10. The route has been
designed to take the tracks to the east of Bridgend and west of Pencoed to the North, and to remain
over water as much as possible to the south. This route represents no change to the areas of
concentrated traffic over the routes flown today.
The descent profile for aircraft following this route is indicated in Figure 11 and is designed to match
the current aircraft’s altitude as closely as possible, within the constraints imposed by complying with
RNAV procedures. It is expected therefore that noise profiles, (which are already low for approaching
aircraft) should differ very little from today.
Fin
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Fin
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Init
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Figure 10: Runway 12 RNAV Track
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Figure 11: Runway 12 RNAV Descent Profile
Runway 12 RNAV Missed Approach
The proposed runway 12 missed approach design is shown in Figure 12 with the missed approach
climb profile shown at Figure 13.
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Figure 12: Runway 12 RNAV Missed Approach
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Figure 13: Runway 12 RNAV Missed Approach with Climb Indicators
It is expected that the RNAV missed approach for runway 12 will be utilised less than the
conventional missed approach (which itself is rarely used) as not all aircraft are RNAV equipped. The
uptake will increase over time as the number of RNAV equipped aircraft increases, however the total
number of aircraft executing a missed approach is not expected to rise as a consequence of this
proposal.
Runway 30 RNAV Approach
Runway 30 is shown in more detail in Figure 14. The route has been designed to follow the centre of
the densest area of concentration of traffic to ensure that the current tracks over the ‘ground’ are
replicated as closely as possible. The approach from the North and South are both over water until the
very late stages of approach.
The descent profile for aircraft following this route is indicated in Figure 15 and is designed to
introduce as little change from the current aircrafts altitude as possible, within the constraints imposed
by complying with RNAV procedures. It is expected therefore that noise profiles (already low for
approaching aircraft) will differ very little from today.
The RNAV approach has been designed to route between the islands of Steep Holm and Flat Holm
thus avoiding overflying, as much as possible, this wildlife sanctuary.
Car
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Figure 14: Runway 30 RNAV Track
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Figure 15: Runway 30 RNAV Descent Profile
Runway 30 RNAV Missed Approach
The runway 30 RNAV missed Approach design is shown in Figure 16 with the missed approach climb
profile shown at Figure 17.
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Figure 16: Runway 30 RNAV Missed Approach
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Figure 17: Runway 30 RNAV Missed Approach with Climb Indicators
It is expected that the RNAV missed approach for runway 30 will be utilised less than the
conventional missed approach (which is rarely used) as not all aircraft are RNAV equipped. The
uptake will increase over time as the number of RNAV equipped aircraft increases, however the total
number of aircraft executing a missed approach is not expected to rise as a consequence of this
proposal.
Likely use of RNAV Routes
The majority of the larger aircraft (twin engine commercial jets and above) operating at Cardiff
Airport are equipped with the technology and crew training to make use of the proposed RNAV
routes. There is also a drive from industry, the airspace regulator and the Government to increase the
use of RNAV. Both the UK FAS and SESAR projects are encouraging the widespread introduction of
RNAV based navigation across the UK and Europe for partial implementation in the period to 2020.
However, uncertainty around the exact arrival times of traffic means that Cardiff ATC will still need
to intervene tactically in the routing of individual flights in order to achieve a safe, orderly and
expeditious flow of traffic. The result is likely to be a spread of inbound tracks, in line with those of
today. As the proportion of aircraft suitably equipped for RNAV increases, the opportunity will be
taken to move increasing numbers of aircraft onto the RNAV routes. This should deliver the safety,
resilience, noise, and emissions benefits referred to earlier, in increasing quantities.
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6. Environmental Considerations
This proposal is to replicate existing conventional routes with RNAV alternatives in line with
upcoming European Legislative requirements. In accordance with the CAA policy for RNAV
replication, Cardiff Airport is not required to undertake assessment of local air quality or CO2
emissions (Ref 7). This is because the effect associated with these potential impacts is expected to be
small as a consequence of the objective to replicate rather than change the existing routes.
The previous sections provide pictorial comparisons of today’s flight paths and the expected location
of flight paths as a consequence of the replications.
Accurate Track Keeping
Aircraft using RNAV are often said to be on ‘rails in the sky’, i.e. they can follow a defined route
accurately and repeatedly. This proposal is based upon the principal that the proposed RNAV routes
will be designed to follow current aircraft tracks as closely as possible. This will avoid additional
noise for areas not already subject to aircraft noise.
The use of RNAV technology enabling aircraft to fly routes more accurately does mean that over time
as an increasing number of aircraft use the RNAV routes there will be an increased concentration of
aircraft over certain core tracks, replacing the spread that is seen today.
The use of RNAV technology will allow an improvement of the positioning of aircraft to minimise
track variation currently seen today. This increased track conformity, is in line with DFT guidance on
environmental objectives. (Aviation Policy Framework, Section 3.31 (Ref 5)) which embodies the
Government guidance that it is desirable to concentrate aircraft along the fewest possible number of
specified routes in the vicinity of airports. Typically locations either side of the routes will be
overflown less and will be exposed to less aircraft noise, while locations close to the route centreline
will be overflown more, and hence will be exposed to more aircraft noise.
Improved Descent Planning
When flying RNAV approaches, pilots have more certainty regarding the distance left to run before
reaching key points in the approach. This enables them to plan their descent such that they are able to
stay higher longer and to execute smooth continuous descents. This can save fuel, reduce CO2
emissions, and reduce noise impact. However these benefits are small and not easily quantified. The
proposed change is not justified on the basis of these benefits and hence no analysis is required (see
Ref. 7).
Noise
Due to the nature of replication there is no requirement to undertake noise modelling for this proposal.
This is in line with the Future Airspace Strategy and CAA Policy requirements for replication (Refs. 6
& 7).
The governments overall policy on aviation nose, as established in the Aviation Policy Framework, is
to limit, and where possible, reduce, the number of people in the UK significantly affected by aircraft
noise. Consistent with this policy, the Government believes that in most circumstances, it is desirable
to concentrate aircraft along the fewest possible number of specified routes in the vicinity of airports
and that these routes should avoid densely populated areas as far as possible.
The latest available noise contours for Cardiff Airport (2007) are shown in Figure 18 whilst the outer
extremities of the 57dB LAeq contours2, along the runway centreline, are shown over laid on the
current aircraft tracks in Figure 19. Aircraft using the RNAV approaches are following straight line
portions which are identical to the conventional procedure tracks (aligned with the extended centre-
line of the runways). Hence there will be no change to the noise contours as a result of the
2 LAeq 16 hours is the preferred method to measure the aggregated exposure to repeated noise events throughout
the day. The resulting value takes into account the total sound energy over the period of time interest. – In this
case 16 hours from 7AM to 11PM.
introduction of RNAV replications. For this reason new contours have not been produced for this
consultation.
Figure 18: 2007 Noise Contours
Figure 19: Traffic Density Plots with 57dBLA Markers
Air Quality Management Area (AQMA)
There is no AQMA established at Cardiff Airport and as this proposal will lead to largely unchanged
traffic patterns and aircraft behaviour it is assumed that there will be no adverse impact upon Local
Air Quality as a result of this proposal.
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7. How to respond to this consultation
Consultation on the proposals detailed in this document will run from 15th December 2014 until 27
th
March 2015 following which all responses will be considered before a formal submission is made to
the CAA.
The approach taken to consultation is outlined in Section 3, and the stakeholders listed are requested to
respond whether or not they have an objection to the proposal. A full list of consultees is provided in
Appendix A.
Email is the preferred response mechanism, although postal responses will be accepted and processed
in the same way.
All responses should be titled RNAV Consultation and should state clearly in the first line on whose
behalf the response is being made.
Responses must also state whether or not the respondent agrees to personal details being passed to the
CAA, by amending the following text as appropriate:
I/We agree/do not agree that personal details contained within this response may be sent to the CAA
as part of the Airspace Change Proposal.
Responses should also include one of the three statements below:
I/We support the proposal for implementation of RNAV replications of approach routes at Cardiff
Airport.
I/We object to the proposal for implementation of RNAV replications of approach routes at Cardiff
Airport.
I/We have no objection to the proposal for implementation of RNAV replications of approach routes
at Cardiff Airport.
Subsequent text should then substantiate the reasons for support or objection.
Please include contact details for use in the event of any queries relating to your response. The CAA
requires all consultation material to be included in any formal submission. If you do not want your
name and address details to be passed to the CAA, please ensure you opt out using the wording
provided above.
Apart from providing details to the CAA, Cardiff Airport undertakes that personal details or content of
responses and submission will not be disclosed to any third parties without prior permission.
This document can be viewed online in English
http://www.cardiff-airport.com/cardiff-airport-rnav-consultation-document/
Or in Welsh
http://www.maesawyr-caerdydd.com/dogfen-ymgynghori-maes-awyr-caerdydd-rnav/
Email responses should be sent to:
Postal responses should be sent to:
RNAV consultation
Head of Airfield Ops
Cardiff Airport
CF62 3BD
A report summarising responses to this consultation will be published on the Cardiff Airport web site
shortly after the closing date. Respondents will be sent a link to a copy of this report using the contact
details provided.
Taking all responses into consideration, Cardiff Airport will then submit a formal proposal for the
implementation of RNAV approach replications including full details of all consultation responses and
any related correspondence. The CAA will then review the proposal (which can take up to 17 weeks)
and reach a regulatory decision.
If the proposal is approved, the implementation process could take a further 12 weeks.
This consultation is being conducted by Cardiff Airport but is overseen by the CAA’s Safety and
Airspace Regulation Group (SARG) to ensure compliance with the process set out in CAP 725
(see section 3). If you have any comments on the way in which this consultation is being
conducted, please contact:
Head of Business Management
Safety & Airspace Regulation Group
CAA House
45-49 Kingsway
London
WC2B 6TE
Please note that this address should only be used for concerns relating to
non-adherence to the consultation process. Correspondence on details of the consultation should
be addressed to Cardiff Airport.
Referenced documents
List of documents referenced in this publication:
(1) CAP 725, CAA Guidance On The Application Of The Airspace Change Process, March 2007,
CAA Directorate of Airspace Policy
http://www.caa.co.uk/docs/33/CAP725.PDF
(2) CAP 724, CAA Airspace Charter which defines the authorities, responsibilities and principles
by which the CAA Director of Airspace policy conducts the planning or airspace and related
arrangements in the UK.
http://www.caa.co.uk/docs/33/CAP724.PDF
(3) Cabinet Office Code of Practice on Consultation
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/255180/Consultation-
Principles-Oct-2013.pdf
(4) Guidance to the Civil Aviation Authority on Environmental Objectives Relating to the
Exercise of its Air Navigation Functions
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/269527/air-navigation-
guidance.pdf
(5) HM Government – Aviation Policy Framework, 2013
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/2739/draft-aviation-
policy-framework.pdf
(6) Civil Aviation Authority, Future Airspace Strategy for the United Kingdom 2011 to 2030
www.caa.co.uk/FAS
(7) Civil Aviation Authority, Policy Statement, Guidance On PBN SID Replication For
Conventional SID Replacement, August 2013.
(8) Policy for the Application of Performance Based Navigation in UK/Irish Airspace 2011
http://www.caa.co.uk/docs
Appendix A
Cardiff Airport Consultative Committee
Bridgend County Council
Cardiff Airport
Cardiff Council
Llancarfan Community Council
Regal Travel – ABTA & Advantage
Vale of Glamorgan Council
Local Authorities
Bristol City Council
Rhondda Cynon Taff County Council
MOD
MOD ST Athan
DAATM
Cardiff Airlines
British Airways
CityJet
KLM
Links Air
Thomson
Thomas Cook
RyanAir
Vueling
Other Airlines / Operators
Aeros
EasyJet
FlyBe
Virgin
NATMAC
Aviation Environment Federation (AEF) Civil Aviation Authority (CAA)
Airport Operators Association (AOA) General Aviation Safety Council (GASCo)
Aircraft Owners & Pilots Association (AOPA UK) Guild of Air Traffic Control Officers (GATCO)
British Airways (BA) Helicopter Club of Great Britain (HCGB)
British Aerospace Systems (BAE Systems) Heathrow Airport Ltd
British Airline Pilots Association (BALPA) Heavy Airlines
British Air Transport Association (BATA) Light Aircraft Association (LAA)
British Balloon & Airship Club (BBAC) Light Airlines
British Business & General Aviation Assc (BBGA) Low Fares Airlines (LFA)
British Gliding Association (BGA) Ministry of Defence (MoD)
British Hang Gliding & Paragliding Assc (BHPA) National Air Traffic Services (NATS)
British Microlight Aircraft Association (BMAA) PPL/IR (Private Pilots Licence/Instrument Rating)
British Model Flying Association (BMFA) Unmanned Aerial Vehicles Assc (UAVA)
British Parachute Association (BPA) UK Flight Safety Committee (UKFSC)
British Helicopter Association (BHA)
Appendix B
A
APF Aviation Policy Framework
AQMA Air Quality Management Area
ATC Air Traffic Control
C
CAA Civil Aviation Authority
CACC Cardiff Airport Consultative Committee
CAP Civil Aviation Publication
CDO Continuous Descent Operations
CO2 Carbon Dioxide
D
DFT Department for Transport
F
FAF Final Approach Fix
FAS Future Airspace Strategy
I
IAA Irish Aviation Authority
IF Intermediate Fix
IAF Initial Approach Fix
IFR Instrument Flight Rules
M
MOD Ministry of Defence
N
NATMAC National Air Traffic Management Advisory Committee
P
PBN Performance Based Navigation
R
RNAV Area Navigation
S
SARG Safety and Regulation Group
SES Single European Skies
SESAR Single European Skies Air Traffic Research
T
TOD Top of Descent
U
UK United Kingdom