1.5 Duty Periods, Rest & Fatigue Management under Nig. CARs Part 8

Why the Nigerian numbers are different

Fatigue rules travel badly. Many cabin crew courses teach a European-style table of maximum flight duty periods that shorten with report time and sector count. Nig. CARs 8.12 does not use that structure. Nigeria's scheme is built on a flat duty ceiling, a minimum rest period, a weekly day off, and cumulative caps. Reproducing a foreign FDP matrix in an NCAA air law answer will cost marks.

Definitions that decide when the clock runs

Part 8 defines the vocabulary precisely:

• Duty — any task that flight or cabin crew members are required by the operator to perform. Part 8 adds that persons are considered to be on duty if they are performing any tasks on behalf of the AOC holder, whether scheduled, requested or self-initiated. Self-initiated tasks count.
• Flight duty period (FDP) — a period which commences when a flight or cabin crew member is required to report for duty and ends at the conclusion of that flight or series of flights.
• Reporting time — the time at which flight and cabin crew members are required by the operator to report for duty.
• Rest period — a continuous and defined period of time during which flight or cabin crew members are free of all duties.
• Standby — a defined period during which a crew member is required by the operator to be available to receive an assignment.
• Split duty — a flight duty period that has a scheduled break in duty.

Two exclusions matter. Positioning transport that is not local in character, required by the AOC holder to move crew to or from flights, is not part of a rest period. Nor is time spent in transportation on aircraft, at the insistence of the operator, to or from a crew member's home station.

The duty ceiling and minimum rest

The AOC holder may exercise an option to reduce a crew member's rest period within the limitations prescribed in IS 8.11.1.3. No AOC holder may assign, and no person may perform, duties in commercial air transportation without at least the applicable minimum rest, and no crew member may accept an assignment to any duty during a required rest period.

Cumulative limits — 55 / 190 / 1,800

Nig. CARs 8.12.1.8 caps accumulated duty for any crew member:

Split-duty breaks are accounted for as follows:

• If the break is less than 8 hours, the full period of the break is accountable as duty.
• If the break is 8 hours or more, 50% of the period of the break is accountable.

Worked example. A crew member reports at 06:00, operates a morning rotation, has a scheduled break from 11:00 to 20:00 in company accommodation, then operates an evening sector finishing at 23:30. The break is 9 hours, so 8 hours and 30 minutes is not the accountable figure — 50% of 9 hours, that is 4 hours 30 minutes, is accountable. Accountable duty is 06:00–11:00 (5:00) + 4:30 + 20:00–23:30 (3:30) = 13 hours, within the 14-hour ceiling. Had the break been 7 hours 30 minutes, all of it would have counted and the duty would have breached the ceiling.

Flight time limits and who they bind

Nig. CARs 8.12.1.4 imposes flight time limits — 8 hours in any 24 consecutive hours, no more than 7 flights or sectors in any duty period or 18 consecutive hours, 30 hours in any 7 consecutive days, 100 hours in any 28 consecutive days and 1,000 hours in any 12 consecutive calendar months. Read the opening words: these are expressed for flight crew members. Cabin crew are bound by the duty ceiling and the cumulative duty caps rather than by a separate cabin crew flight time table.

Two flexibilities sit alongside them:

• 8.12.1.5 Compliance with scheduling requirements. The Authority may consider a person compliant where a flight was scheduled to terminate within limits but exceeded them because of circumstances beyond the operator's control, such as adverse weather, or during emergency or adverse situations beyond the operator's control.
• 8.12.1.6 Special flight duty schemes. The Authority may approve a special flight duty scheme for an AOC holder, and an AOC holder may elect to apply the flight crew member flight duty and rest requirements to cabin crew members. Where an operator has made that election, its cabin crew are held to the flight crew figures.

Records and the fitness duty

Under 8.12.1.7 the operator must maintain flight time, flight duty period, duty period and rest period records — including reports on extended flight duty periods and reduced rest periods — for 24 months, and must have an updated record available before crew begin their duty day or first flight.

Fatigue is also a personal responsibility. Part 8 requires that a flight is not commenced if a crew member is incapacitated from performing duties by any cause such as injury, sickness, fatigue or the effects of alcohol or drugs, and not continued beyond the nearest suitable aerodrome where capacity is significantly reduced by fatigue, sickness or lack of oxygen.