AD 98-23-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | PW4050 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4052 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4056 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4060 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4060A | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4060C | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4062 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4152 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4156 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4156A | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4158 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4160 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4460 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4462 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW4650 | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
Unsafe Condition
High Pressure Compressor Blade Tips
Affected Aircraft
Pratt & Whitney PW4000 series turbofan engines
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
High Pressure Compressor Blade Tips
Applicability Source Text
Show captured applicability text from the source AD
Skip to main content (Press Enter). United States Department of Transportation About DOTOur ActivitiesAreas of Focus FAA Dynamic Regulatory System A Comprehensive Knowledge Center of Regulatory and Guidance Material from the Office of Aviation Safety and other Services and Offices Welcome, Guest Sign In Search What's New DRS Feedback Home Technical issue with the system There is a technical issue with the system. Please try again later. U.S. Department of Transportation Federal Aviation Administration 800 Independence Avenue, SW Washington, DC 20591 (866) TELL-FAA | (866) 835-5322 Privacy Policy Accessibility
Document Text
Show stored source text (verify against official source)
Skip to main content (Press Enter). United States Department of Transportation About DOTOur ActivitiesAreas of Focus FAA Dynamic Regulatory System A Comprehensive Knowledge Center of Regulatory and Guidance Material from the Office of Aviation Safety and other Services and Offices Welcome, Guest Sign In Search What's New DRS Feedback Home Technical issue with the system There is a technical issue with the system. Please try again later. U.S. Department of Transportation Federal Aviation Administration 800 Independence Avenue, SW Washington, DC 20591 (866) TELL-FAA | (866) 835-5322 Privacy Policy Accessibility
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
Related Airworthiness Directives
2016-08-09
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: Crack found in the high-pressure compressor (HPC) 10th stage disk, caused by surface scratches from a manual polishing procedure during manufacture.
2015-22-03
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: cracks in the barrel section of the LPT 4th stage IAS which could, if not corrected, result in uncontained IAS release, damage to the engine, and damage to the aircraft.
2012-22-16
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: Failure of the 3rd stage low-pressure turbine (LPT) duct segments, which could lead to LPT rotor damage, uncontained engine failure, and damage to the airplane.
2012-14-09
final ruleAirworthiness Directives; Pratt & Whitney (P&W) Division Turbofan Engines
Unsafe Condition: Reports of 3rd and 4th stage vane fractures in the low-pressure turbine (LPT) of certain PW4000-94'' and PW4000-100'' turbofan engines.