EASA Part-ORO.FTL implements Subpart Q of EU 83/2014, capping basic flight duty periods at 13 hours for early starts and 11 hours for late-finish rotations. Augmented crew above 11 hours requires a dedicated rest facility classified by ICAO Doc 9966 from Class 1 horizontal bunks down to Class 3 reclining seats. Long-haul carriers operate inside Fatigue Risk Management Systems certified by national authorities.
FRMS Frameworks in Practice
Lufthansa’s FRMS combines biomathematical modelling through the Boeing Alertness Model with self-reported fatigue scores collected post-flight via the carrier’s mobile app. Air France-KLM contracts with Jeppesen for the same scientific input. The SAFE model from QinetiQ remains the EASA-accepted reference for new pairing assessments. Carriers must establish an FRMS Steering Committee with pilot association representation under collective labour agreements.
Optimisation Software Vendors
Jeppesen Crew Pairing and Crew Rostering, now part of Boeing Digital Aviation Solutions, hold market leadership across European carriers including KLM, BA and Iberia. Sabre AirCrews runs at Lufthansa Group while IBS Software Group serves several Asian carriers. Open-source alternatives like NCrew remain confined to academic research environments at Delft and Linkoping.
Cost Drivers in Scheduling
Crew accounts for roughly 8-11% of airline unit cost, with hotel and per-diem outlays running approximately 250-400 EUR per layover for a long-haul captain. Optimisers minimise broken pairings, dead-head positioning and reserve coverage gaps simultaneously. A 1% improvement in crew utilisation at a 100-aircraft carrier typically saves roughly 12-15 million EUR annually. Union work rule constraints typically force minimum 24-hour layover at destinations beyond 6 time zones.