- Crew duty limits are a hard operational constraint, not a negotiable service preference.
- Late passengers, schedule creep and added sectors are the usual cause of duty breaches, and they are foreseeable.
- Ask about the duty plan at quotation stage for any long day, multi-sector itinerary or late arrival.
- A broker who pressures crew on duty has created a safety issue and a liability exposure simultaneously.
Why duty binds the schedule
Charter clients tend to assume that a private aircraft can depart whenever they arrive. In practice the schedule is bounded by the crew's duty period, which began before the passengers did — with the crew's report time, preparation, positioning and any earlier sectors flown that day.
Fatigue management rules exist because fatigue is a demonstrated causal factor in accidents. Regulators express them differently, but every mature framework limits the length of a flight duty period, requires a minimum rest period before the next one, and shortens the permitted duty when the day starts early, runs into the night, or contains multiple sectors.
The vocabulary brokers need
Flight duty period is the time from crew report to the end of the final sector; it includes ground time between sectors, not just time in the air. Rest period is the protected time between duties during which the crew is free of all obligations, and it typically must include a defined opportunity for sleep.
Augmented crew — adding a third or fourth pilot — extends the permissible duty on long sectors and is a real option on intercontinental missions, but it is a cost and an availability question the operator must answer, not an assumption the broker can make.
- Report time: when the crew's duty clock starts, typically well before passenger arrival.
- Flight duty period: the whole working day, including turnarounds.
- Rest period: protected, and it must be arranged and paid for.
- Augmentation: extra crew to extend duty on long sectors, subject to approval and availability.
- Discretion: a limited commander's extension, exercised by the commander alone.
Planning implications
Any itinerary with an early start, several sectors, a long ground wait and a late return should be checked against duty before it is quoted. The failure mode is well known: the itinerary is feasible on paper, then the client adds a lunch, and the final sector falls outside the crew's permitted day.
Where duty is tight, options exist — a second crew, an overnight, a later departure, a positioning change — but every one of them has a cost and a lead time. Discovering the constraint at quotation is a pricing conversation; discovering it on the day is a cancellation.
On the day of flight
When passengers are running late, the broker's job is to give the operator accurate information early and to tell the client the truth about the consequence. Vague reassurance in both directions is the worst possible handling: the crew plans for a departure that will not happen and the client believes a delay is free.
If the commander determines that the flight cannot be completed within duty, that determination is final. The broker does not negotiate it, does not seek a second opinion from a commercial contact at the operator, and does not represent to the client that the decision is a service failure.
Client conversations that work
Explain duty once, early, in plain language: the crew's working day is regulated for the same reason a commercial airline's is, and it started before yours. Clients who understand the rule schedule around it; clients who first hear about it during a delay conclude they were let down.
Frame options rather than obstacles. 'We can hold the aircraft until 21:00; beyond that the crew is out of hours and the alternatives are an overnight or a second crew, at these costs' is a conversation the client can act on.
Practical checklists
- Confirm crew report time and expected end of duty with the operator.
- Check multi-sector days and long ground waits against duty before quoting.
- Price the overnight or second-crew alternative in advance where duty is tight.
- Give the client a stated latest-departure time in writing.
- Escalate passenger delays to the operator immediately, not at the deadline.
Frequently asked questions
- Can a client pay to extend crew duty?
- No. Duty limits are regulatory. What money can sometimes buy is a second crew or an overnight, subject to availability.
- Who decides whether to use commander's discretion?
- The commander, alone, within narrow limits. It is not a commercial lever and should never be requested by a broker.
- • Duty is a hard constraint that begins before the passengers arrive.
- • Check duty feasibility at quotation, not on the day.
- • Give operators accurate delay information immediately.
- • Never apply commercial pressure to a fatigue decision.