Which of the following describes the requirements for split duty?

• A. - Rest opportunity between 2200-0500 local time. - At least 3 hours at a suitable accommodation. - Rest period must be scheduled before the FDP starts. - May not rest shorter than the scheduled time. - Flight segment must be completed before the rest opportunity. - Combined FDP and rest cannot exceed 14 hours.
• B. - Rest opportunity must occur between 0600-1800 local time. - At least 2 hours at suitable accommodation. - Rest period can be scheduled anytime. - May rest shorter than scheduled if flight is short.
• C. - Rest opportunity must be daytime only; No accommodation required; Rest period is optional; FDP can exceed 14 hours.
• D. - Rest period must be scheduled after FDP starts; Combined FDP and rest cannot exceed 60 hours.

Answer: (A)

Split duty is a fatigue-management concept where a flight crew completes part of a duty period, then takes a rest before finishing the remainder of the duty. The rest must meet several concrete conditions to be valid: it has to be a nighttime rest window between 2200 and 0500 local time, it must last at least 3 hours, and it has to be taken at a suitable accommodation (not just a quick break). The rest is planned to occur after a preceding flight segment within the duty period and before the remainder of the FDP resumes, and the total time for the FDP plus the rest cannot exceed 14 hours. The rest duration cannot be shorter than what was scheduled.

These constraints ensure fatigue is managed during the night, with a mandatory minimum rest and a clear sequencing within the duty period. The other options don’t fit because they either specify daytime rest windows, shorter minimum durations, no required accommodation, or incorrect total time limits, all of which would undermine the intended fatigue protections.