For each excuse: the legal position under CJEU case law and a wording building block for your reply. Honesty included — two of the six excuses are often legitimate, and we tell you which.
1“Technical fault”
Legal position
Under CJEU Wallentin-Hermann (C-549/07), technical problems arising in or from maintenance are part of an air carrier's normal activity — not extraordinary circumstances. In van der Lans (C-257/14) the CJEU extended this to unexpected, prematurely occurring faults. Only narrow exceptions remain, such as hidden manufacturing defects affecting a whole fleet, or sabotage.
Reply building block (template)
You rely on a technical fault. Under the case law of the CJEU (Wallentin-Hermann, C-549/07; van der Lans, C-257/14), technical faults — including unexpected ones — are regularly inherent in the normal operations of an air carrier and do not constitute extraordinary circumstances. I therefore ask you to specify and evidence what made this fault extraordinary, or to pay the compensation under Art. 7 of Regulation (EC) No 261/2004.
2“Extraordinary circumstances” — unspecified
Legal position
The burden of proof rests with the airline (Art. 5(3) of the Regulation). It must name the specific circumstance AND prove that it could not have been avoided by all reasonable measures. A generic two-liner with no details on the event, its timing and the measures taken does not meet that standard of proof.
Reply building block (template)
You invoke extraordinary circumstances in general terms without specifying them. I ask you to identify the specific circumstance, its timing, and the reasonable measures you took, and to provide evidence for each (Art. 5(3) of Regulation (EC) No 261/2004; CJEU, Wallentin-Hermann, C-549/07). Absent that proof, I maintain my claim in full.
3“Strike”
Legal position
It depends on the kind of strike. A “wildcat strike” by the airline's own staff following a surprise restructuring announcement is not extraordinary under CJEU Krüsemann (C-195/17). A union-organised, announced strike by the airline's OWN staff is likewise regularly part of normal operational risk under Airhelp v SAS (C-28/20). Strikes by THIRD parties (air traffic control, airport staff) can be different — there the airline's position is often stronger, and you should factor that in realistically.
Reply building block (template)
You rely on a strike. Insofar as the strike involved your own staff, it is, under the case law of the CJEU (Krüsemann, C-195/17; Airhelp v SAS, C-28/20), regularly part of an air carrier's normal operational risk and not an extraordinary circumstance. I ask you to state whose staff was on strike and what reasonable measures you took, or to pay the compensation under Art. 7 of the Regulation.
4“Bad weather”
Legal position
Honestly: severe weather can be a legitimate extraordinary circumstance. But the burden of proof still sits with the airline — and weather that did not stop other flights at the same airport at the same time rarely carries a rejection. So don't argue the principle; ask for the evidence.
Reply building block (template)
You rely on weather conditions. I ask you to evidence the specific conditions at the relevant time, that they affected my flight in particular, and what reasonable measures you took — especially given that other flights in the same period apparently operated as scheduled.
5“Air traffic control restriction”
Legal position
Honesty again: air traffic management decisions (capacity restrictions, closed airspace) are frequently genuine extraordinary circumstances — the Regulation even names them as an example. Chances of success are lower here. What the airline must still deliver: the specific link between the ATC measure and YOUR flight.
Reply building block (template)
You rely on an air traffic control measure. I ask you to evidence the specific instruction (type, period, affected airport or airspace) and its direct link to my flight, and to set out what reasonable measures you took to avoid its consequences.
6“Knock-on delay / late arrival of the aircraft”
Legal position
A delay carried over from an earlier rotation of the same aircraft is regularly inherent in normal flight operations — rotation planning, schedule buffers and spare capacity are the airline's responsibility. If the carrier relies on it, it must additionally prove that the ORIGINAL disruption was extraordinary and that its effects could not be absorbed before your flight.
Reply building block (template)
You base the rejection on the late arrival of the aircraft from a previous rotation. Rotation planning, including adequate schedule buffers, is part of an air carrier's normal operations. I ask you to demonstrate and evidence that the original disruption itself constituted an extraordinary circumstance and that its consequences could not have been avoided by reasonable measures before my flight.
The building blocks are non-binding wording templates and general information — not legal advice on your individual case. Before sending, check that the details match your case and add your flight data.