Probably find that parts have been "Robbed " from this aircraft to keep another ( or several others ) flying......if VIIL was on maintenance anyway it is a easy source of parts , rather than going AOG for them. Problems do mount up if the robberies get out of control........also the recording of which part is where is complicated ( BA has a awfull computer system called EWS which is commonly known as Engineering Without Spares ............
)
Can even get to the "Rolling Robbery " situation where the next hangar input aircraft is robbed to make the last one serviceable, and so on........