Operating under multiple appendices
Operating under multiple appendices means:
combining multiple appendices within a single flight duty period, and/or
switching from one appendix to another on consecutive flight duty periods.
Transitioning between appendices can sometimes produce inconsistencies in duty, flight, standby and off-duty requirements, which can result in increased fatigue risk.
How the new fatigue rules work when operating under multiple appendices
The fatigue rules address this risk by requiring operators to have procedures in place:
- that ensure their pilots are within the limits of the new appendix prior to transitioning, and
- to determine the limits that will apply to the proposed flight duty period when pilots transition between appendices in a single flight duty period.
Before pilots can change from one appendix to another, their operator must:
- identify the hazards associated with the pilot transitioning between the appendices, and
- develop a risk management procedure, to ensure that the transition does not result in increased risk to aviation safety. The procedure must be documented in the operations manual.
Note: working to multiple appendices doesn't always require the development of a risk management procedure and alternative limits. If an operator can ensure that their pilots remain within the prescribed limits of each of the appendices that they work under, either in consecutive flight duty periods or within a single flight duty period, then there should be no increase in fatigue risk associated with transitioning.
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