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Flight Validation Process of RNP APCH Procedures: Thailand Case Study

Flight Validation Process of RNP APCH Procedures: Thailand Case Study ICAO Asia-Pacific GNSS Seminar Bangkok, Thailand 26 March 2012. 1. Presentation Outline. Background Objectives of Flight Validation for RNP APCH Requirements Step-by-step process Pre-flight In-flight Post-flight

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Flight Validation Process of RNP APCH Procedures: Thailand Case Study

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  1. Flight Validation Process of RNP APCH Procedures: Thailand Case Study ICAO Asia-Pacific GNSS Seminar Bangkok, Thailand 26 March 2012 1

  2. Presentation Outline • Background • Objectives of Flight Validation for RNP APCH • Requirements • Step-by-step process • Pre-flight • In-flight • Post-flight • Reporting

  3. Background • RNP APCH = RNAV (GNSS) • Using GNSS for approach operation • For aircraft with RNP 0.3 capability • Utilize Aircraft-Based Augmentation System (ABAS) • May include Baro-VNAV

  4. Phuket PBN Implementation 4

  5. Procedures for Phuket 09 Yellow – Current VOR Track Green - PBN Track 5

  6. Objectives of Flight Validation • Proposes of Flight Validation of RNP APCH • Correctness of Procedure • Correctness of Chart • Correctness of Navigation Database • Reliability of Navigation System • Signal interference • Important GNSS parameters will be automatically recorded • Conformity with ground based Navaids (VOR, DME) as necessary • Environmental Conditions • Obstacle Clearance  thus FLC needs to be conducted during day-time • Flyability

  7. Requirements • Standards • ICAO Doc 9906 Vol 5 and 6 (Flight Validation) • ICAO Doc 8071 (as necessary) • Qualification • Pilots and FIS technicians trained on RNAV flight validation and GNSS (ICAO Doc 9906 Vol 6) • Equipment • Flight Management System (FMS) • Baro-VNAV capability for Baro-VNAV procedures • Flight Inspection System (FIS) • Navigation Database

  8. Requirements: Flight Management System • FMS – HS-CNS equipped with Pro Line 21 avionics • Certified GPS Receiver – TSO 129a is continuously checking the integrity of the GPS position solution through RAIM Fault Detection Capability

  9. Requirements:Flight Inspection System • Automatic Flight Inspection System (AFIS) • Fully automated • Record archives both as print-out and electronic database

  10. Pre-Flight Activities • Initial Validation • ATC coordination • Weather forecast • GNSS service prediction • Number of GPS satellite • Dilution of Precision (DOPs) • RAIMOutage • Satellite image of expected flight path (recommended) • Assessment of GNSS interference as needed

  11. Pre-flight: Initial Validation • Simulation of Procedure • Using FMS simulator and FIS software to validate the design • Reduce risks of error • If no error detected, upload to aircraft FMS and FIS

  12. Pre-flight:GNSS Service Prediction

  13. Pre-flight:Satellite Image Yellow – Current VOR Track Green - PBN Track 13

  14. In-Flight • For each RNAV(GNSS) Approach • Fly all segments and holdings • At least one FLC for each LNAV and LNAV/VNAV profiles • At least one FLC for entire missed approach profile • Preferably fly using auto-pilot • Fly final approach segment as designed and at 100 ft below the designed altitude • Identify controlling obstacles • Check obstacle clearance • Assess fly-ability and workloads • Record GNSS data for all legs flown

  15. In-Flight: GNSS Interference • As necessary • Under scope of flight inspection, not flight validation • Look at impact on service interruption • RAIM Alert • Loss of GNSS Service • Interference may not result in full loss of GNSS services

  16. In-Flight: GNSS Interference • Importance Parameters • Number of Satellites • Signal to Noise Ration • Dilution of Precision

  17. Post-Flight Activities • Data Analysis and Interference Assessment • Flight Validation Report

  18. Post-flight:Automated Data Recording

  19. Post-flight:GNSS Interference Assessment • Record and analysis of satellite availability, signal-to-noise ratio, and Dilution of Precision (DOPs).

  20. Post-flight:Flight Validation Report

  21. Summary • To ensure safety of flight operation, proper flight validation needs to be conducted using: • Proper equipments • Qualified personal • Proven process

  22. Thank you for your attention. Thank you for your attention.

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