Any AA (American Airlines) frequent flyers here on FR know if this is true? I have heard from AA flyers that if one of the 2 pilots steps out of the cockpit for the restroom, etc., a flight attendant steps into the cockpit & leaves a service cart behind to block the aisle while they are in there. Pilot comes back, knocks, gets observed by the FA thru the cockpit peep hole & gets let back in. This eliminates the 1 pilot by himself point of failure (heart attack, shenanigans, etc., etc.). Anyone see that procedure on any of their flights?
According to the FAA accident investigator on Fox, that's required in the US (all airlines), but not in Europe.