GM1 CS FTL.1.205(a)(2) Flight duty period (FDP)

• ED Decision 2014/002/R found in: Air Operations (965/2012) Part-ARO Part-ORO Part-CAT Part-SPA Part-NCC Part-NCO Part-SPO (Sep 2023)
• ED Decision 2023/023/R found in: Air Operations (965/2012) Part-ARO Part-ORO Part-CAT Part-SPA Part-NCC Part-NCO Part-SPO (Feb 2025)

GM1 CS FTL.1.205(a)(2) Flight duty period (FDP) ED Decision 2014/002/R NIGHT DUTIES – APPROPRIATE FATIGUE RISK MANAGEMENT (a) When rostering night duties of more than 10 hours (referred to below as ‘long night duties’), it is critical for the crew member to obtain sufficient sleep before such duties when he/she is adapted to being awake during day time hours at the local time where he/she is acclimatised. To optimise alertness on long night duties, the likelihood of obtaining sleep as close as possible to the start of the FDP should be considered, when rostering rest periods before long night duties, by providing sufficient time to the crew member to adapt to being awake during the night. Rostering practices leading to extended wakefulness before reporting for such duties should be avoided. Fatigue risk management principles that could be applied to the rostering of long night duties may include: (1) avoiding long night duties after extended recovery rest periods (2) progressively delaying the rostered ending time of the FDPs preceding long night duties; (3) starting a block of night duties with a shorter FDP; and (4) avoiding the sequence of early starts and long night duties. (b) Fatigue risk management principles may be applied to the rostering of long night duties by means of: (1) considering operator or industry operational experience and data collected on similar operations; (2) evidence-based scheduling practices; and (3) bio-mathematical models. GM1 CS FTL.1.205(a)(2) Flight duty period (FDP) ED Decision 2023/023/R APPROPRIATE FATIGUE RISK MANAGEMENT (APPROPRIATE FRM) The term ‘appropriate FRM’ is a term chosen to refer to a set of principles and tools that support the operator and their operational personnel in managing particular fatigue hazards and associated risks through the safety risk management (SRM) process within the operator’s management system, in full compliance with the duty time, flight time limits and rest requirements defined by Subpart ORO.FTL. It should be distinguished from the fully-fledged fatigue risk management (FRM) system described under ORO.FTL.120. An FRM system under ORO.FTL.120 is a scientifically based, data-driven complement or alternative to the prescriptive regulation of flight and duty time and rest requirements, which manages crew fatigue in a flexible manner with due consideration to the risk exposure and the nature of operations. Operators need such FRM system when deviating from the certification specifications or when applying a mix of prescriptive rules and flexible arrangements. Conversely, an ‘appropriate FRM’ concept supports implementation of the rules and is applied without deviating from them. These two distinct methods are also supported by ICAO (ref.: ICAO Doc 9966). ##### GM1 CS FTL.1.205(a)(2) Flight duty period (FDP) *ED Decision 2023/023/R* **APPROPRIATE FATIGUE RISK MANAGEMENT (APPROPRIATE FRM)** The term ‘appropriate FRM’ is a term chosen to refer to a set of principles and tools that support the operator and their operational personnel in managing particular fatigue hazards and associated risks through the safety risk management (SRM) process within the operator’s management system, in full compliance with the duty time, flight time limits and rest requirements defined by Subpart ORO.FTL. It should be distinguished from the fully-fledged fatigue risk management (FRM) system described under ORO.FTL.120. An FRM system under ORO.FTL.120 is a scientifically based, data-driven complement or alternative to the prescriptive regulation of flight and duty time and rest requirements, which manages crew fatigue in a flexible manner with due consideration to the risk exposure and the nature of operations. Operators need such FRM system when deviating from the certification specifications or when applying a mix of prescriptive rules and flexible arrangements. Conversely, an ‘appropriate FRM’ concept supports implementation of the rules and is applied without deviating from them. These two distinct methods are also supported by ICAO (ref.: ICAO Doc 9966).