2021-05-51: Turbine Engine Compressor Section
Emergency order 2021-05-51 is an airworthiness directive. The FAA's subject line: Turbine Engine Compressor Section. It names the Pratt & Whitney PW4090 engine: about 2 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Engine
- Makes
- Pratt & Whitney Division
- Models
- PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, PW4090-3
- Engine series
- Pratt & Whitney PW4090 2 aircraft
Dates and paperwork
- Docket
- Unknown
- Replaced by
- 2022-06-09
- Status
- Historical
- The FAA's document
- Read the order on the FAA's site
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 7, 2026. Connections as data: /graph/directive/2021-05-51.json · aircraft systems.