briefer: john charles angermayer esc/ga electronic systems center hanscom afb, ma
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Briefer: John Charles Briefer: John Charles AngermayerAngermayer
ESC/GAESC/GAElectronic Systems CenterElectronic Systems Center
Hanscom AFB, MAHanscom AFB, MA Date: 5 Oct 2004Date: 5 Oct 2004
Global Air Traffic Operations/MobilityGlobal Air Traffic Operations/MobilityCommand and Control (GATO/MC2)Command and Control (GATO/MC2)
System Program OfficeSystem Program Office
“GA LEADS THE WAY”
2003 2003 Major General Albert R. Shiely Jr. Award WinnerMajor General Albert R. Shiely Jr. Award Winner
Navigation DatabasesNavigation Databases
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 2
DefinitionsDefinitions
Accuracy - The degree of conformance between the estimated or measured value and its true value.
Resolution - The smallest difference between two adjacent values that can be represented in a data storage, display or transfer system
Correctness – Data meets stated quality requirements.
Integrity - The assurance that a data element retrieved from a storage system has not been corrupted or altered in any way since the original data entry or latest authorized amendment
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 3
Definitions (Cont.)Definitions (Cont.)
Process – The steps involved in achieving a goal or objective. (My own Definition)
Assurance – Obtaining the required degree of confidence in the ability of a process or product to meet its stated requirements, that it is fit for its specified purpose.
Quality Management – Establishing and maintaining the required assurance in the process and product.
Essential Level Data– Failure conditions (i.e. using data of insufficient quality) that reduce capability of the aircraft or crew to deal with adverse operating conditions.
Timeliness - The degree of confidence that the data is applicable to the period of its intended use
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 4
State
Trusted Navigation Data Aircraft ManufacturerSoftware Developer (Tools)
Air Crew
Operations FMS
Trusted Navigation Database
Data ChainData Chain
NGA
DAFIF
Aircraft Specific
DAFIF
Data ChainData Chain
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 5
Simplified Air Force Data Simplified Air Force Data ChainChain
Aircraft
Pilot -User
Trusted
Format and Select
Unit
FMS Data
WorldWide
NGA
Combine State Data
Trusted
‘States’
Supplier
StateData
GATM’s Main Area of Interest for
Processes and Tools
Wing or Squadron Check World Data
WorldWideChecked
Feedback loop – (e.g. SSF)
●●●
Notams
SPOMAJCOM
●●●
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 6
How is Compliance Achieved How is Compliance Achieved
State Data By definition correct For navigation data, an approved supplier is either
a State or a RTCA DO-200A/EUROCAE ED-76 compliant supplier.
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 7
How is Compliance Achieved How is Compliance Achieved (Cont.)(Cont.)
NGA Data Uses State Data (Re-formats State Data) Uses trained analysts and approved processes Controls tools used
Uses only NGA internal systems Tests tools Ensures only approved tools are used Ensures appropriate use of tools
Controls the release process and release timing Does extensive data reasonableness checks during
release process. Uses CRCs Quality Management
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 8
How is Compliance Achieved How is Compliance Achieved (Cont.)(Cont.)
Users Training Defined and approved processes are used Only approved tools are used
Tool vendor Achieved tool qualification – DO-200A section
2.4.5 Uses an approved tool release process Appropriate configuration management Built required data control into tool Built extensive data error reporting into tool
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 9
Feedback LoopFeedback Loop
Problem reports can come from all parts of the Data Chain.
Have a working system for feedback in place Main capture is at Hill AF and NGA Main CM control is at Hill AF Main decision makers are currently at AMC support by all
stakeholders Most problems flow into NGA
If NGA can correct the problem then it goes no further. NGA still responsible for NOTAMS
Processes are in place between all stakeholders to ensure problems get recorded at Hill AF and that those problems are appropriately distributed to the stakeholders.
Process is in place to ensure all problems are answered.
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 10
What can be said about the What can be said about the GATM Approval.GATM Approval.
Database is acceptable for specific essential operations. Data Chain is in compliance with DO-200A at essential level. Data delivered to the KC-135 aircraft has data resolution (number
of digits) sufficient for essential use. Accuracy is sufficient across the data base to support the allowed
essential operations. There is a working feedback system that can help measure and
improve the correctness of the database. Process changes are not allowed within the data chain without a
GATM audit and approval; Quality control is being locally improved.
GATM Approval only involves database use in RNP 10 and RNP 4 airspace.
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 11
What additionally should be said What additionally should be said about the GATM Approval about the GATM Approval
The database is not approved as 100% correct The database is not approved for all RNP operations The database is not approved for use in RNP airspace
on all Air Force aircraft The database is not approved for critical navigation
operations
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 12
SummarySummary
Where do we go from here? My current objectives
Educate database users on current feedback system Monitor the current feedback system against it’s
performance requirements Let current feedback system measure the correctness of
the database Let current feedback system improve the correctness of
the database Improve Quality Management in the Data Chain Maintain current compliance of the Data Chain to DO-
200A
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 13
Summary (Cont.)Summary (Cont.)
Other possibilities Establish an allowable correctness value for the database
depending on use? Make a big push to find errors in the database and fix
any problems found to meet correctness requirement?
““GA LEADS THE WAY”GA LEADS THE WAY”Slide 14
Summary (Cont.)Summary (Cont.)
Very difficult possibilities Re-design the process Implement the re-designed process?
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