Allegheny Airlines
…added were Houston in 1978, Florida at the end of 1978 (TPA-MCO-PBI), and Phoenix in 1979. In 1959, Allegheny debuted its first turbine airliner, a Convair 540, a Convair 340 with the piston engines replaced by Napier Elands. When Rolls-Royce bought Napier it dropped the Eland, so 540s in the United States…