Funny you should mention that Paulc.
The caterers caught door 1R on a Balkan 154 one day where I worked.
I asked an engineer who looked after MD-80'sto take a look and the Balkan F/E made some temp repairs with a lump hammer or similar.
The captain asked to use his radio equip (L/F ?) to call Sofia for advice.
Thought he would depart low level and burn the fuel or tech stop, but no - having checked with ATC he kept his original plan and went back at 37,0.
I had a bad feeling I would be hearing something on the news on TV that night.
Rugged planes!
Even heard of one being flown with just two engines - no pax.