> Not a great argument for a second pilot unless the second pilot never goes to the bathroom. The human factors involved in Germanwings 9525 didn't randomly occ

> Not a great argument for a second pilot unless the second pilot never goes to the bathroom. The human factors involved in Germanwings 9525 didn't randomly occur during the flight, they specifically occured while the co-pilot was in the bathroom. One of the changes from that incident is that there is always a second person in the cockpit. If a pilot needs to leave the cockpit for some reason, a second crew member must come in and ensure that the pilot flying doesn’t lock the other pilot out. As to the rest of the argument: the whole point is that two pilots is safer than one by a very large margin. We eliminated engineers, radio operators and navigators because we know have systems that do that better than a human. We do not yet have systems that do the job of pilot as well as a human. Commercial autolanding has existed since the 1960s but there are still situations where the pilot has to land the plane. We aren’t there yet.