Allegheny Airlines operated 31 BAC-111s, inheriting 26 when they bought Mohawk Airlines and acquiring 5 more from Braniff Airlines in 1972. This former Braniff aircraft came into the fleet March 21, 1972. It was unfortunately written off July 9, 1978 after landing from an unstable approach to Rochester-Monroe County Airport, NY. The aircraft crossed the threshold some 60 kts fast and touched down almost half way down the runway, coming to rest 728 feet past the end.