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

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

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Phuket PBN Implementation Phuket PBN Implementation

Procedures for Phuket 09Procedures for Phuket 09

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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.