German magazine "Der Spiegel" is reporting that after the accident, a number of LH and 4U crews refused to board and fly their Airbus. A couple of flights scheduled from DUS and STR have been cancelled. A LH spokesperson confirmed the there have been Germanwings crews that didn't fly "due to personal reasons".
Absolutely the right thing to do if your mind isn't on the job at hand - such as having just learned the fate of some of your colleagues / friends. Not sure we can infer serviceability issues from this action.
Are we 'fixating' here? An awful lot of votes for a hypoxia scenario with no actual evidence of such.
Is it possible that another failure of some description lead the crew into being so busy trying to 'aviate' that they never got as far as 'navigate' or 'communicate' - hence the apparent straight-line descent and no call?