Engines
ATP Gains Authorization for Honeywell T55 Turboshaft Engine
ATP has received authorization to produce maintenance publications for Honeywell's T55 turboshaft engines.
Honeywell T55 Turboshaft Engine
Aircraft Technical Publications (ATP) is now authorized to produce maintenance publications pertaining to the Honeywell T55 engine. (Photo: Honeywell)

Aircraft Technical Publications (ATP) has received authorization for the Honeywell T55, giving the company the green light to produce maintenance publications pertaining to the turboshaft engine.

Honeywell Aerospace builds the T55 turboshaft engine, which has powered U.S. helicopters and fixed-wing aircraft since the 1950s. Honeywell and the T55's original designer, Lycoming, built more than 6,000 T55 engines and they have logged more than 12 million hours of operations between Boeing’s CH-47 Chinook and MH-47 helicopters.