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?