Could it have been G-BMLP?
The 'humped back' 727 that Dan Air operated was indeed G-BMLP, but apparently the hump was an ADF aeriel/air-con ducting flairing, not a repair.
Thread about it here:-
https://www.airliners.net/forum/viewtopic.php?t=418899
Last edited by DH106; 27th May 2021 at 09:13.