Pratt & Whitney PW4090
2 aircraft on the U.S. register carry a Pratt & Whitney PW4090 engine, rated at about 91,790 pounds of thrust. The Boeing 777 is the model most often fitted with it (2 aircraft). The aircraft carrying it were built between 1997 and 2001.
The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as Pratt & Whitney PW4090. FAA spelling: PW4090.
Where they are owner's state
Kind of aircraft
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Pratt & Whitney PW4090 the component layer
No FAA order in the current files names this engine series. Operators and repair shops have filed 4,010 failure reports with the FAA since 1995, 64 of them in the last ten years.
Failure reports 4,010 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Latest reports
Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.
Connections how this engine series links to the rest of the register
- Boeing 777 2 with this engine series
- United Airlines INC 1 of these aircraft
- Alta 777 LLC 1 of these aircraft
- Failure reports on the Pratt & Whitney PW4090 4,010 reports since 1995
These connections as data: /graph/engine/pratt-whitney-pw4090.json · about the eFlight graph.
Aircraft newest certificates first · 2
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N772ET | Boeing 777-200 |
Fixed-wing, multi-engine | Alta 777 LLC Salt Lake City, Utah |
Experimental | 2023-01-19 | ValidFAA registration status code V: Valid registration. All codes |
| N794UA | Boeing 777-222 |
Fixed-wing, multi-engine | United Airlines INC Chicago, Illinois |
Standard | 2013-04-01 | ValidFAA registration status code V: Valid registration. All codes |
Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.