PBN and the Cockpit Workshop
Technical Requirements
FMS Operations and Aircraft Performances
Don-Jacques OULD FERHATQuovadis COO,
October 18th 2012
2Project title (Insert, Header & Footer)
• Flight Technical Error (FTE)
• Flight Operational Safety Assessment (FOSA)
• Engine Out SID (EOSID)
Summary of Existing Technical Requirements
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FTE ASSESSMENT
Desired Path
Defined Path
Estimated Position
True Position
Path Steering Error (PSE) or Flight Technical Error (FTE) with AP ON
Position Estimation Error (PEE)or Navigation System Error (NSE)
Path Definition Error (PDE)
Total SystemError (TSE)
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FTE Assessment
Engine failureor system failures
Wind
FTE OEI / System failuresFTE Statistical
distribution
Wind
No failure
FTE (95%)
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• FOSA stands for Flight Operational Safety Assessment
• Eurocontrol Guidance Material released in 2010 and ICAO Working Paper few months later
• But what does it really mean?
FOSA
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FOSA Guidelines
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EOSID
The Departure Sector is defined in the EU-OPS 1.495. The Obstacles are taken into account within a combination of:• Cone from as defined in EU-OPS 1.495• Corridor with half-width equal to 2xRNP value
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EOSID
35ft or 50ft
Obs n°3
Obs n°2
35ft or 50ft End of Net FP
Gross Flight Path
Net Flight Path
Obs n°4
EF at VEF
Minimum Obstacle Clearance
0.8%
0.8%
Obs n°1
35ft or 50ft
Minimum Obstacle Clearance
Engine Failure at VEF and before DP (Diversion Point) => The EOSID is flown
EOSID and Obstacle Clearance
As per:• Certification Specifications (CS/FAR 25.111 & CS/FAR 25.115)• Operating Rules (EU-OPS 1.495)• ICAO PANS-OPS Chap. II.3.1.2 – Minimum Obstacle Clearance• AC 120.91 – 9 (Termination of Takeoff segment)
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CONCLUSION
• FTE assessment methodology should be made available for OEM
• FOSA guidelines should be endorsed by ICAO and shared
• EOSID with RNP provide safety enhancement and should be widely promoted
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