Hi,

does anybody know the underlying causes of this error message?
Bulgaria Air refuses to pay out compensation for flight delay as per EU regulation 261/2004. The reason being a "technical defect - flight control no dispatch", which is outside of their control and so it is deemed an extraordinary circumstance, so they don't need to compensate passengers.

However the above error message is not a defect, it's an error message , for which the underlying causes can be different, some perhaps in the airline's control (e.g. could have been avoided through proper maintenance), some perhaps outside of their control.

Most probably these circumstances can be uncovered in a legal trial, but I'd like to have an idea what could come out during a technical investigation, if requested during the trial.

thank you


EDIT:
They also refer to the MEL (Minimum Equipment List) which is basically a list of all components that are required to be functioning before take-off, and which components are not required. But they don't say which exact component was inoperable, and how come it was fixed after a reboot of the aircraft.