Crew shortage and crew time limits: when the airline may be responsible

Duty-time limits and mandatory crew rest are safety constraints, but do not by themselves explain why a flight was delayed. Separate the reason the same crew could no longer work from the reason no replacement was available.

Airlines often use phrases such as crew shortage, crew sickness, crew rest, flight time limitation or operational reasons. To passengers, this sounds like an internal airline problem, and often it is. Unlike air traffic control or airport closure, crew planning is part of the carrier's organization.

That does not mean every case automatically wins. If crew timed out because of an earlier extraordinary circumstance, such as severe weather or airport closure, the airline will try to connect the whole chain to that first event. The initial cause and the later crew planning need to be separated.

The claim is often stronger when the airline says there were no pilots, no cabin crew, no reserve crew or that the crew exceeded permitted duty time without an external reason directly explaining the delay. In those cases, passengers can argue that the problem sits in the carrier's organization.

Pay attention if other flights by the same airline operated normally, the airport was open, there was no serious weather or ATC restriction, and your flight waited only for replacement crew. A generic operational reasons response is not enough.

The defence may be stronger if the crew ran out of duty time because a previous segment was objectively stopped outside the airline's control. For example, air traffic control closes airspace, an airport restricts departures, an aircraft diverts because of a medical event, and the crew then can no longer legally operate.

Even then, the question is not finished. The airline should show it took reasonable measures: checked reserve crew, offered rerouting, arranged hotel and meals, and did not leave passengers to solve onward travel alone.

If you receive a refusal, ask for detail. Was the issue crew illness, lack of reserve crew, expired duty time, late crew arrival from another flight or mixed causes? When did the airline know the crew could not operate and what alternatives were checked?

For travelers from Serbia through European hubs, add whether everything was under one booking. If you missed an onward connection because of crew delay, the assessment should look at the final destination and the rerouting offered.

Keep messages, app screenshots, departure-board photos, boarding pass and receipts. If gate staff say crew is unavailable, write down the time and wording. If the pilot or cabin crew explains that duty time has expired, that is an important detail.

For flight delay compensation under EU rules, check at least three hours of arrival delay, route coverage and responsibility. A claim under Serbian/ECAA domestic law needs a separate legal-basis check; later CJEU case law is not automatically binding for every flight from Serbia. Keep waiting costs separate from fixed compensation.

Travelers from Serbia often fly through large hubs where one crew problem can break the whole itinerary. If the first flight shifts and the connection fails, the key facts are whether the booking was single and when you reached the final destination.

Do not assess only the first segment. Add the full journey, booking reference, arrival time and every alternative offered. A crew problem that looks like a two-hour delay on paper can in practice become a full day of lost travel.

Keep notices in order: the initial cause, when duty expiry was announced, whether replacement crew was sought and the proposed departure time. Rest must not be skipped to recover a delay; the question is whether reasonable alternatives existed, not whether crew should have broken a safety rule.

If the wait becomes overnight, record the hotel request, response, transfer and receipts. Let Kasni can separate cause evidence from care costs in the same file and request an answer on both, without promising that the label crew timeout alone establishes compensation.

The CJEU judgment in C-156/22 and joined cases addresses unexpected absence through illness or death of an essential crew member. It does not automatically decide every duty-time expiry following an external disruption.