I wonder how long they could keep all four of those things going.
I never got to have a look, but was told that they had a crawlway through the wing for the F/E to work on the engines in flight. Don't know if it's true or not.
When I was a QF apprentice in the early '60s they used to come in for a few days at a time, and were usually inspected by groups of not unattractive young ladies while they were there.
At that time, there were two older apprentices, twin brothers. About 10 years later, I ran into them flying a DC3 for Air NiuGini when they piloted a HHH charter from Bougainville to Honiara. Can't remember their names, I'm sure someone here will.