All had to be changed when the our fleet was grounded, late 1983 or early 84,where ever they were, Ascension etc. . It was a nightmare.
It was indeed...literally. Once the jets had been fixed, they launched at all times of day and night to catch up on the backlog of route task requirements. I'd just arrived at Brize and my room was 3 floors up at the front of the OM, with a grandstand view of the RW. The 'Sound of Freedom' was quite considerable!!