US Lycoming T55

Helicopter Engines



Lycoming T55



First instroduced in 1955, more than 6,000 T55 engines have been produced, logging some 12 million flight hours with different Chinook variants. The first T55 produced 1,600 shaft horsepower (SHP), after several decades and generations of development, the lastest variant -714 now offers 4,800 SHP and powers the Chinook to a maximum speed of 196 mph / 170 knots.
Lycoming is now part of Honeywell


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SHP:
Type: Turboshaft


  News


T55 Support in Germany for Chinook

T55 Support in Germany for Chinook

18-Sep-20 - Rolls-Royce Deutschland under license of Boeing and Honeywell will perform local support of the T55 engines if the CH-47 Chinook is selected in the Transporthubschrauber (STH) heavy-lift helicopter requirement to replace the current CH-53G fleet in the Bundeswehr #T55
Honeywell New T55 Center in Phoenix

Honeywell New T55 Center in Phoenix

21-Jul-20 - Honeywell passed US Army audit and opens new T55 engine maintenance center In Phoenix, Arizona increases engine throughput, lowers turn times, and streamlines support for the Chinook helicopter fleet #T55
Fight Readiness of US Army Trainers

Fight Readiness of US Army Trainers

19-Mar-20 - US Army’s first Modernized Flexible Engine Diagnostic System (MFEDS) operating at Fort Rucker, Alabama ensures the flight readiness of engines after repair and before they are reinstalled on an aircraft. #MFEDS
Honeywell to Upgrade Chinook’ T55 Engines

Honeywell to Upgrade Chinook’ T55 Engines

16-Oct-19 - Honeywell is launching a new T55 engine upgrade for the US Army’s CH-47 Chinook helicopters which will offer over 20% more power at sea level. In operation since 1962, more than 6,000 T55 engines having been produced and logging 12 million hours of operation #T55
T55 Engines Powers the SB>1 Defiant

T55 Engines Powers the SB>1 Defiant

16-Apr-19 - A pair of Honeywell T55 engines powered the Future Vertical Lift (FVL) demonstrator Sikorsky/Boeing SB>1 Defiant intended to modernize the US Army Aviation branch #T55
SB>1 Defiant Begun Ground Tests

SB>1 Defiant Begun Ground Tests

14-Jan-19 - The Boeing/Sikorsky SB>1 Defiant demonstrator run first ground tests #Defiant
Honeywell Overhauled 1000th T55 Engine

Honeywell Overhauled 1000th T55 Engine

15-Feb-18 - The Corpus Christi Army Depot completed the overhaul of the 1,000th T55 engine. More than 6,000 T55 have been produced and logged more than 12 million hours of operation on the CH/MH-47 Chinook
    More News ...



Used by


ManufacturerModel
Sikorsky SB>1 Defiant


Versions


EngineSHP
T55
LTC4B-8D / T55-08D2970
T55-L-7123750
AL55124200
T55-GA-714A4868
T55-GA-714C6000





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