2026-21-06
final ruleAirworthiness Directives; Pratt & Whitney Division Engines
Unsafe Condition: unsafe condition on these products.
Why matched: Airworthiness Directives; Pratt & Whitney Division Engines
Pratt & Whitney Division United Technologies Corporation Airworthiness Directives
239 ADs indexed for Pratt & Whitney Division United Technologies Corporation aircraft.
Models
Recent ADs
2026-17-08
final ruleAirworthiness Directives; Pratt & Whitney Division Engines
Unsafe Condition: Incorrect shot peening on high-pressure compressor (HPC) drum rotor disk assemblies.
Why matched: Airworthiness Directives; Pratt & Whitney Division Engines
2026-09-02 Recurring
final ruleAirworthiness Directives; Pratt & Whitney RTX Corporation (Type Certificate Previously Held by Pratt & Whitney Division United Technologies Corporation) Engines
Unsafe Condition: Separation of the high-pressure compressor (HPC) 7th-stage integrally bladed rotor (IBR-7) due to crack indications in the HPC 15th-stage disks, front turbine hubs, high pressure turbine (HPT) 1st-...
Why matched: Airworthiness Directives; Pratt & Whitney RTX Corporation (Type Certificate Previously Held by Pratt & Whitney Division United Technologies Corporation) Engines
2023-22-02 Recurring
final ruleAirworthiness Directives; Pratt & Whitney Division Engines
Unsafe Condition: Discovery of multiple cracked outer diffuser cases (ODCs). Failure of the ODC could result in damage to the engine and airplane.
Why matched: Airworthiness Directives; Pratt & Whitney Division Engines
2023-19-02 Recurring
final ruleAirworthiness Directives; Pratt & Whitney Division Engines
Unsafe Condition: Failure of the LPC fan hub assembly, which could result in uncontained debris release, damage to the engine, and damage to the aircraft.
Why matched: Airworthiness Directives; Pratt & Whitney Division Engines
2022-12-12
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: a manufacturing quality escape due to insufficient cooling of the LPT stage 5 air seal resulting in a reduction of the life of the low-cycle fatigue (LCF) life limit
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
2022-07-13
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: Corrosion of the air/oil heat exchanger leading to oil leaks and potential engine failure.
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
2022-06-09 Recurring
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: The unsafe condition on these products is the potential for cracks in certain 1st-stage LPC blades, which can lead to engine failure and fire during flight.
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
2021-22-14 Recurring
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: The LPT 4th-stage air sealing ring segment assemblies moving into the LPT 4th-stage blades knife edge seals, resulting in damage to the ring segment assemblies.
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
2021-05-16 Recurring
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: LPT 4th-stage vane cluster assemblies leaning back and notching into rotating LPT 4th-stage blades, causing some blades to fracture and release.
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
2021-05-51
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: The failure of a 1st-stage low-pressure compressor (LPC) blade on a PW4077 model turbofan engine resulting in an engine fire during flight.
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
2020-25-09
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: damaged or failed 3rd stage LPT duct segments on PW engines with the Talon IIB outer combustion chamber assembly configuration installed, resulting in engine surges, in-flight shutdowns, diversions...
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
2019-06-07 Recurring
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: cracks in the fuel nozzle braze joint and cracks in the fuel manifold tube adjacent to the elbow fitting
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
2019-06-02
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: High cycle fatigue (HCF) cracks found in the fuel nozzle supply manifold.
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
2019-03-01 Recurring
final ruleAirworthiness Directives; Pratt & Whitney Division (PW) Turbofan Engines
Unsafe Condition: an in-flight failure of a 1st-stage low-pressure compressor (LPC) blade
Why matched: Airworthiness Directives; Pratt & Whitney Division (PW) Turbofan Engines
2018-21-11 Recurring
final ruleAirworthiness Directives; Pratt & Whitney Division (PW) Turbofan Engines
Unsafe Condition: certain LPC fan hubs could crack before their published life limit due to low-cycle fatigue
Why matched: Airworthiness Directives; Pratt & Whitney Division (PW) Turbofan Engines
2018-14-10
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan
Unsafe Condition: An unrecoverable engine in-flight shutdown (IFSD) after an ice crystal icing event.
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan
2018-13-02
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: multiple cracked 4th stage low-pressure turbine (LPT) air seals in the fleet
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
2018-02-10 Recurring
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: multiple cracked outer diffuser cases
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
2017-12-03
final ruleAirworthiness Directives; Pratt & Whitney Division Turbofan Engines
Unsafe Condition: An unrecoverable engine in-flight shutdown (IFSD) after an ice crystal icing event, followed by an attempt to rapidly restart the engine with the Electronic Engine Control (EEC) Active Clearance Co...
Why matched: Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
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