flight validation process of rnp apch procedures: thailand case study icao asia-pacific gnss seminar...
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Flight Validation Process of RNP APCH Procedures:
Thailand Case Study
ICAO Asia-Pacific GNSS Seminar
Bangkok, Thailand
26 March 2012
Flight Validation Process of RNP APCH Procedures:
Thailand Case Study
ICAO Asia-Pacific GNSS Seminar
Bangkok, Thailand
26 March 2012
1
• Background• Objectives of Flight Validation for RNP APCH• Requirements• Step-by-step process
– Pre-flight
– In-flight
– Post-flight
– Reporting
Presentation OutlinePresentation Outline
• 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
BackgroundBackground
4
Phuket PBN Implementation Phuket PBN Implementation
Procedures for Phuket 09Procedures for Phuket 09
5
Yellow – Current VOR TrackGreen - PBN Track
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
Objectives of Flight Validation Objectives of Flight Validation
• 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
RequirementsRequirements
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
Requirements: Flight Management SystemRequirements: Flight Management System
Automatic Flight Inspection System (AFIS)
• Fully automated
• Record archives both as print-out and electronic database
Requirements: Flight Inspection SystemRequirements: Flight Inspection System
Activities
• Initial Validation • ATC coordination• Weather forecast• GNSS service prediction
– Number of GPS satellite– Dilution of Precision (DOPs)– RAIM Outage
• Satellite image of expected flight path (recommended)
• Assessment of GNSS interference as needed
Pre-FlightPre-Flight
Pre-flight: Initial ValidationPre-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
Pre-flight: GNSS Service PredictionPre-flight: GNSS Service Prediction
Pre-flight: Satellite ImagePre-flight: Satellite Image
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Yellow – Current VOR TrackGreen - PBN Track
In-Flight 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
In-Flight: GNSS Interference 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
In-Flight: GNSS Interference In-Flight: GNSS Interference
Importance Parameters
• Number of Satellites
• Signal to Noise Ration
• Dilution of Precision
Activities
• Data Analysis and Interference Assessment
• Flight Validation Report
Post-FlightPost-Flight
Post-flight: Automated Data RecordingPost-flight: Automated Data Recording
Post-flight: GNSS Interference AssessmentPost-flight: GNSS Interference Assessment
Record and analysis of satellite availability, signal-to-noise ratio, and Dilution of Precision (DOPs).
Post-flight: Flight Validation ReportPost-flight: Flight Validation Report
• To ensure safety of flight operation, proper flight validation needs to be conducted using:– Proper equipments
– Qualified personal
– Proven process
SummarySummary
Thank you for your attention.Thank you for your attention.