Indeed Revi
But in this case the accident reason is given by Leendert.
The drop tank was full, while his main tanks were not.
Had there been any technical problem, the accident card should (presumably) have mentioned that.
Yes I know you take off on your main tanks and then switch over to your aux fuel, hence me saying after take off....
However my main reason for asking was basically to find out how "one did it" when not on any operational mission. In a ferry case like this, the drop tank was probably supposed to be attached after landing as well
Cheers
Stig