The US Army has granted a preliminary flight rating to GE Aerospace's T901 turboshaft engine, a key airworthiness milestone for the powerplant intended to re-engine the service's Black Hawk and Apache helicopter fleets.
The T901 was developed under the Improved Turbine Engine program as a replacement for GE's long-serving T700 turboshaft, which powers the Sikorsky UH-60 Black Hawk and the Boeing AH-64 Apache. Rated at 3,000shp (2,240kW), the new engine offers a 50% increase in available power over the older T700 while also burning less fuel — a combination the Army sees as critical for operating heavier, more capable rotorcraft in demanding conditions.
GE, Sikorsky and the US Army began ground testing the engine in early 2025 on the UH-60, with an initial hover flight following in May of that year. The Army describes the granting of a preliminary flight rating (PFR) as a key step in the certification process, confirming the engine has reached a level of maturity sufficient to support defined flight operations.
“The engine has proven it is safe, reliable, and fully capable of operating in the real world,” the Army's Capability Program Executive for Aviation office said on August 10, adding that the T901 had “attained the level of maturity and technical confidence necessary to support defined flight operations.” To reach that point, the engine logged 2,600 hours of runtime in a test cell and more than 90 hours of aircraft test time.
The T901's path has not been entirely smooth. The now-defunct Future Attack Reconnaissance Aircraft (FARA) program was originally set to fly with the engine before that effort was cancelled, leaving the Black Hawk and Apache re-engining requirement as the T901's primary application. Fitting a more powerful, more efficient engine to those existing platforms is seen as one of the most cost-effective ways to boost performance across the Army's large helicopter fleet without designing entirely new aircraft.
The additional power headroom matters because both the UH-60 and AH-64 have grown heavier over successive upgrades, adding sensors, armor and mission equipment that erode the performance margins of the original T700. A 50% power increase restores much of that margin, improving hot-and-high performance, payload and climb capability — the kinds of gains that translate directly into operational flexibility for crews.
With a preliminary flight rating now in hand, the T901 moves closer to full qualification and eventual fielding. For GE Aerospace, the milestone marks meaningful progress on a program that has spanned years of development and testing, and for the US Army it brings the prospect of a substantially more capable Black Hawk and Apache fleet a step nearer to reality.
Sources: FlightGlobal. Featured image: AI-generated by AviationShop. By Marco Bianchi.
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