flydonkey
fatigue is rarely a factor
The level of fatigue of the ENTIRE crew is very much a factor in the safe operation of a flight extending into a discretionary period. CAP371 limitations were not designed with discretionary extensions on a regular basis in mind.
What other plausible reasons would there be for deciding to extend one's duty day?
This sounds very much like mandatory or compulsory overtime depending which way you look at it.
MP
