glekichi -
What we (industry wide) need is some standard phone call that can be made.
An airline with a mature FRMS will have this, as required by ICAO & as required by the airlines SMS audited by CASA.
If that is so, why are so many pilots so weary of mentioning fatigue?
If it's not working either the process is still in it's infancy, it was incorrectly applied or their is mis trust in the organisation. Crew will be gun shy to report fatigued if management has previously made examples of other crew.
If it is a prior to the start of a flight, the cause of being unfit for duty is irrelevant.
Unless of course the cause of fatigue was induced by the company, poor rostering, insufficient rest, accumulated fatigue, poor quality hotel. A company can't wash it's hands of it's responsibilities when their actions have not allowed crew to present fit for duty.
If it is an in- flight onset of fatigue, then obviously some kind of report will be needed so fatigue does need to be mentioned....
Umm, have a look at CASA & ICAO recomendations, I'll think you'll find a report is required and Fatigue will need to be mentioned. There are also a few regs that will outline when & what sort of reports are required.
MC