In my days at LHR Tech 1 in the central area we had over 40 a/c a night to service and as the maximum time most a/c stayed on the deck was 12 hours it wasn't worth putting engine covers on them as we didn't have time to fit them and oil levels and other work was required and they were never held on the a/c or in the central area stores , pitot head and static vent plugs were carried in a container on the flight deck as were u/c ground locks and were fitted after the last flight of the day most blanks were for engines in transit to the overhaul facilities or special ones for "5th pod" flights to outstations.
hope this helps
Last edited by avionic type; 23rd Apr 2010 at 16:11.
Reason: sorry chaps bad grammar [read before send]