Originally Posted by
nlbc
After the coup, a set of engines were sent to the Rolls-Royce factory in East Kilbride for repairs
The OP got that part right - a total of 4 Avon engines were involved, all spirited back to Chile after four years at the factory, though it's not clear whether they went back into service. One has now been returned to Scotland with a view to eventually putting it on display as a memorial:

The film is worth seeing - non-Scots viewers may regret the lack of sub-titles.