Interesting article here about a group of flight attendants who refused their flight assignment when the in-charge (lead flight attendant) told them that on an earlier flight the pilot had threatened to ditch the airplane into the Atlantic.
An inquiry couldn't find any evidence that the captain had ever threatened such a thing. It's not impossible that the captain threatened such a thing, but it requires less suspension of disbelief if the FA made up the story.
If the captain did threaten to ditch the airplane in the Atlantic during flight, it would either have to be while the first officer was present, or while the FA was alone in the cockpit with the captain while the FO was in the washroom. If the former, why would an FO collaborate with an insane captain to cover up a stated suicide plan? If the latter, what would be a reasonable response by the FA? Remember, he's believing that the person in charge of the aircraft intends to kill everyone on board. To say nothing to anyone who could corroborate the story either during the flight, on landing, or at all until it was time to meet for another flight with the same captain? Wouldn't you ring an emergency code on the call button, radio ATC with the threat, report to company as soon as you were able, enlist the help of your immediate co-workers to restrain the captain, or tell the FO what had transpired as you let him back into the cockpit?
It seems to me more likely that a conflict arose between the authority of the pilot and the authority of the in-charge. The captain is ultimately in charge in such a situation, but some flight attendants try to manage up, and some pilots take that worse than others. It's possible for someone to make a subordinate's life hell without actually transcending workplace regulations, and it's not uncommon for such subordinates to rebel. Maybe the in-charge asked the others to boycott the flight and provided the story. Maybe the in-charge made the others believe the captain really was that loopy. At any rate, I hope Air Canada has a better contingency plan than relying on employees to invoke workplace safety regulations in the event of flight attendants detecting mental instability in pilots.
I approve of workplace solidarity in the face of unacceptable demands. I disapprove of crashing airplanes into the Atlantic.