524 ADs indexed for Pratt aircraft.
Airworthiness 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
Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Unsafe Condition: Turbine exhaust frames manufactured from a certain material are less durable and more susceptible to developing cracks under thermal stress.
Why matched: Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Unsafe Condition: Circumferential cracks at the turbine exhaust frame external surface caused by thermal stress from engine starts.
Why matched: Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Airworthiness 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
Airworthiness Directives; Pratt & Whitney Engines
Unsafe Condition: High-pressure compressor (HPC) 7th-stage integrally bladed rotor (IBR-7) separation resulting in engine shutdown and aborted takeoff.
Why matched: Airworthiness Directives; Pratt & Whitney Engines
Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Unsafe Condition: crack, fracture, missing, or loosening of the gas generator case to turbine support case retaining bolts due to inadequate low-cycle fatigue life
Why matched: Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Airworthiness Directives; Pratt & Whitney Engines
Unsafe Condition: The failure of the HPC IBR-7 was caused by a nickel powdered metal anomaly, which is similar in nature to an anomaly previously observed, and these parts are susceptible to failure much earlier tha...
Why matched: Airworthiness Directives; Pratt & Whitney Engines
Airworthiness Directives; Pratt & Whitney Engines
Unsafe Condition: The fracture of HPT 2nd stage turbine hub assembly lugs, which resulted in blade liberation and a titanium fire in the high-pressure compressor (HPC).
Why matched: Airworthiness Directives; Pratt & Whitney Engines
Airworthiness Directives; Pratt & Whitney Turbofan Engines
Unsafe Condition: Failure of the high-pressure compressor (HPC) 7th-stage integrally bladed rotor (IBR-7) due to a nickel powdered metal anomaly, resulting in an engine shutdown and aborted takeoff.
Why matched: Airworthiness Directives; Pratt & Whitney Turbofan Engines
Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Unsafe Condition: There has been a recent in-service report of a PT2 blade failure on a model PT6A-67 engine and two reports of PT2 blade failures during testing at the manufacturer's facility. The PT2 blade failure...
Why matched: Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Unsafe Condition: Failure of the high-pressure turbine (HPT) 1st and 2nd-stage disks, potentially due to undetected subsurface material defects, which could result in uncontained HPT disk failure, engine damage, air...
Why matched: Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Airworthiness 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
Airworthiness 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
Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Unsafe Condition: The unsafe condition, if not addressed, could result in uncontained HPT disk failure, damage to the engine, damage to the airplane, and loss of the airplane.
Why matched: Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
Airworthiness Directives; Pratt & Whitney Canada Corporation Turbofan Engines
Unsafe Condition: The combustion chamber outer case (CCOC) to rear compressor case (RCC) flange bolt low cycle fatigue life was inadequate and those flange bolts may develop cracks resulting in flange bolt fracture.
Why matched: Airworthiness Directives; Pratt & Whitney Canada Corporation Turbofan Engines
Airworthiness Directives; Pratt & Whitney Canada Corp. Turbofan Engines
Unsafe Condition: Crack originating from machining marks on the back face of the impeller, propagating until the impeller fractures, leading to uncontained failure.
Why matched: Airworthiness Directives; Pratt & Whitney Canada Corp. Turbofan Engines
Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines
Unsafe Condition: Engines failing to achieve required power (torque) during high power applications due to internal leaks in the bleed-off valves (BOVs) caused by glass bead contamination.
Why matched: Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines
Airworthiness Directives; Pratt & Whitney Turbofan Engines
Unsafe Condition: an uncommanded dual engine shutdown upon landing, resulting in compromised braking capability due to the loss of engine power and hydraulic systems.
Why matched: Airworthiness Directives; Pratt & Whitney Turbofan Engines
Airworthiness Directives; Pratt & Whitney Turbofan Engines
Unsafe Condition: Failure of the LPC R1 due to cracking, and subsequent reports of inflight shutdowns.
Why matched: Airworthiness Directives; Pratt & Whitney Turbofan Engines
Airworthiness 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