Pratt & Whitney F139
Pratt & Whitney F139 is the U.S. military designation for the PW4062, a 94-inch PW4000 derivative and the exclusive two-engine powerplant of the Boeing KC-46 Pegasus. Pratt & Whitney states that each KC-46A engine delivers 62,000 lb of thrust and averages more than 16,000 hours on-wing before shop visit; the military designation is retained as a distinct model boundary.
Identity
- Aliases
- F139PW4062PW4062/F139Pratt & Whitney PW4062
- Domains
- aviation
- Identity Level
- model
- Kind
- turbofan
- Name
- Pratt & Whitney F139
- Status
- active
Details
- Air Breathing Specs
- Max Thrust Kn
- 275.8
- Description
- Pratt & Whitney F139 is the U.S. military designation for the PW4062, a 94-inch PW4000 derivative and the exclusive two-engine powerplant of the Boeing KC-46 Pegasus. Pratt & Whitney states that each KC-46A engine delivers 62,000 lb of thrust and averages more than 16,000 hours on-wing before shop visit; the military designation is retained as a distinct model boundary.
- Developers
- Family
- Manufacturers
Links
Assets & Meta
- Creation Time
- August 14, 2026 at 10:50:33 UTC
- Updated Time
- August 15, 2026 at 09:11:48 UTC
Other
- Sources
- Accessed Date
- 2026-08-14
- Note
- Pratt & Whitney identifies PW4062/F139 as a PW4000 variant, exclusive KC-46A powerplant, two engines per aircraft, and more than 16,000 hours average on-wing.
- Publisher
- Pratt & Whitney
- Title
- PW4062/F139 Engine
- Accessed Date
- 2026-08-14
- Note
- Pratt & Whitney documents two PW4062 engines per KC-46A and states that each engine delivers 62,000 pounds of thrust.
- Publisher
- Pratt & Whitney
- Title
- Pratt & Whitney, Boeing Celebrate Delivery of First PW4062 Engines for KC-46 Tankers