"Maule Driver" wrote

The captain explained that he's sure that the
maintenance crew has it under control and that no, there's
really no reason for the crew to have to go out too.

The ground crew has a lot more training and experience with
the cargo doors than does the flight crew. Airlines have
specialist to work on each task and if I recall correctly, at
one time, one of the major airlines even had a line maintenence
foreman doing the aircraft pre-flight inspection instead of the
flightcrew.
Airline pilots are just that, pilots, they are not trained to
do the work of a maintenence crew.

Bob Moore
PanAm (retired)