Most JT3D engines still in service today are used on military aircraft, where the engine is referred to by its US military designation of TF33.

Eight Pratt & Whitney TF33 engines power the U.S. Air Force’s B-52 Stratofortress long-range, heavy bomber that is capable of flying at high subsonic speeds at altitudes up to 50,000 feet. It …

The Pratt & Whitney TF33 turbofan engine was developed from the highly successful Pratt & Whitney J57 engine core. Starting in 1960, the civilian version (designated the JT3D) powered …

Pem-Air provides expert MRO for JT3D/TF33 engines, offering maintenance, repairs, & overhauls to extend service life for commercial & military aircraft.

Nov 16, 2023 · Pratt & Whitney has secured a $870 million contract to support TF33 engines powering the B-52 Stratofortress and E-3 Sentry aircraft.

Nov 16, 2023 · Pratt & Whitney, an RTX subsidiary, has agreed to sustain the US Air Force’s (USAF) TF33 engines, which power the service’s B-52 Stratofortress and E-3 Sentry aircraft.

Therefore, the TF33 is still very much in use and the need to understand its ability to operate and predict its potential for failure is at an all-time high. Another important factor is that the depot …

Feb 6, 2025 · Air National Guard and Air Force Reserve KC-135s were re-engined with Pratt & Whitney TF33-PW-102 (JT8D-3) low-bypass turbofan engines from retired Boeing 707 …

Jul 7, 2011 · The TF33 is a derivative of the commercial JT3D engine, which powered the commercial Boeing 707, 720, and DC-8 aircraft.

Jun 6, 2015 · The Air Force began using the TF33 to power B-52 Stratofortresses in March 1961 and it still uses them today. The engine also has been keeping E-3 Sentry Airborne Warning …