2001-08-52: Multiple-engine power loss due to HPC surges
Emergency order 2001-08-52 is an airworthiness directive. The FAA's subject line: Multiple-engine power loss due to HPC surges. It names the Pratt & Whitney PW4052, Pratt & Whitney PW4056, Pratt & Whitney PW4060, Pratt & Whitney PW4062, Pratt & Whitney PW4158, Pratt & Whitney PW4460, Pratt & Whitney PW4462 engines: about 129 aircraft on the U.S. register today across them, 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
- PW4050, PW4052, PW4056, PW4060, PW4060A, PW4060C, PW4062, PW4152, PW4156, PW4156A, PW4158, PW4160, PW4460, PW4462, PW4650
- Engine series
- Pratt & Whitney PW4052 1 aircraft
Pratt & Whitney PW4056 25 aircraft
Pratt & Whitney PW4060 14 aircraft
Pratt & Whitney PW4062 6 aircraft
Pratt & Whitney PW4158 65 aircraft
Pratt & Whitney PW4460 10 aircraft
Pratt & Whitney PW4462 8 aircraft
Dates and paperwork
- Docket
- 2001-NE-09-AD
- Replaced by
- 2001-09-07
- 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 November 2, 2026. Connections as data: /graph/directive/2001-08-52.json · aircraft systems.