westhawk in post 97 gives his version of events when he turned up for work at short notice and observed his FO was not up to the task (for whatever reason).
I wonder how others would react when you turn up in the hotel reception with all of the crew for a scheduled early morning departure from an island airfield, and the captain is not there? The FO phoned the captain, who mumbled that it was best if all the crew could continue to the airport, and prepare the aircraft for departure as he would join them as soon as possible. When the captain arrived shortly before departure time, he was clearly not capable of completing the flight, slurred speech, and a suspicion of alcohol on his breath, which was compounded when he could not complete the load sheet.
The FO refused to fly with the captain, who protested his innocence; it needed the local police to remove the protesting captain from his seat, and eventually be replaced by the standby captain who arrived an hour later from the same hotel.
All of this occurred a long time ago, in 1978 in fact, but how would you have responded, or recommended this FO to respond?