Even allowed a 2 1/2 engine ferry flight on a 3 1/2 engined a/c ... HS Trident 3b MAN-LHR .. worked ok and I have the tie . We had to look at the local 1:50,000 Ordanance Survey map to find an escape route down the SW valley if we lost another on t/o from Rwy 24 .
Boost engine had to be operating , and thus T2s and T1s did not do these ferry flights .
rgds condor .