30 results found (780ms)
Airworthiness Directives; General Electric Company CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 Turbofan Engines
Unsafe Condition: could result in damage to the airplane.
Why matched: Airworthiness Directives; General Electric Company CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 Turbofan Engines
Airworthiness Directives; General Electric Company (GE) CF34-1A, CF34-3A, and CF34-3B Series Turbofan Engines
Unsafe Condition: Failure of certain part number (P/N) and serial number (S/N) fan blades and aft actuator head hoses, which could result in an under-cowl fire and subsequent damage to the airplane.
Why matched: Airworthiness Directives; General Electric Company (GE) CF34-1A, CF34-3A, and CF34-3B Series Turbofan Engines
Airworthiness Directives; General Electric Company CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 Turbofan Engines
Unsafe Condition: Interference between the rotating and stationary portions of the 4-step air balance piston seal can develop under certain high-power, high-altitude engine shutdown events, potentially leading to ex...
Why matched: Airworthiness Directives; General Electric Company CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines (GE) CF34-3A1/-3B/-3B1 Turbofan Engines
Unsafe Condition: Suspected arc-out defect in fan disks may lead to uncontained fan disk failure during flight operation.
Why matched: Airworthiness Directives; General Electric Aircraft Engines (GE) CF34-3A1/-3B/-3B1 Turbofan Engines
Airworthiness Directives; General Electric Company CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 Series Turbofan Engines
Unsafe Condition: Suspect stage 5 LPT disks and stage 6 LPT disks that could fail due to low-cycle fatigue cracking starting at the site of an electrical arc-out on the disk.
Why matched: Airworthiness Directives; General Electric Company CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 Series Turbofan Engines
Airworthiness Directives; General Electric Company CF34-3A1 Turbofan Engines
Unsafe Condition: The removal of certain HPT rotating component part numbers from the CF34 Engine Manual's Life Limits section, resulting in the removal of life limits and imposing an unlimited life on those compone...
Why matched: Airworthiness Directives; General Electric Company CF34-3A1 Turbofan Engines
Airworthiness Directives; GE Aircraft Engines (GE) CF34-3A, CF34-3A2, CF34-1A, CF34-3A1, CF34-3B, and CF34-3B1 Series Turbofan Engines
Unsafe Condition: LCF cracks and failure of the HPC forward spool, which could result in an uncontained engine failure and damage to the airplane.
Why matched: Airworthiness Directives; GE Aircraft Engines (GE) CF34-3A, CF34- 3A2, CF34-1A, CF34-3A1, CF34-3B, and CF34-3B1 Series Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines CT7 Series Turboprop Engines
Unsafe Condition: Propeller gearbox (PGB) equipped with certain gears that do not meet design specifications, leading to separation of left-hand and right-hand idler gears, which could result in uncontained PGB fail...
Why matched: Airworthiness Directives; General Electric Aircraft Engines CT7 Series Turboprop Engines
Airworthiness Directives; General Electric Company CF34-3A1, -3B, and -3B1 Turbofan Engines
Unsafe Condition: B-sump scavenge screen blockage due to coking which could result in ignition of B-sump oil in the secondary air system, fan drive shaft separation, and uncontained engine failure.
Why matched: Airworthiness Directives; General Electric Company CF34-3A1, -3B, and -3B1 Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines CT7 Series Turboprop Engines
Unsafe Condition: Separation of the propeller gearbox (PGB) left-hand and right-hand idler gears, which could result in uncontained PGB failure and internal bulkhead damage, possibly prohibiting the auxiliary feathe...
Why matched: Airworthiness Directives; General Electric Aircraft Engines CT7 Series Turboprop Engines
Airworthiness Directives; General Electric Company (GE) CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 Turbofan Engines
Unsafe Condition: Failure of the No. 5 bearing rotating air seal, leading to a fire in the cavity of the low pressure turbine (LPT), overtemperature of the LPT turbine disk, and excessive turbine disk growth.
Why matched: Airworthiness Directives; General Electric Company (GE) CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 Turbofan Engines
GENERAL ELECTRIC AIRCRAFT ENGINES (GE) CF34-1A, CF34-3A, -3A1, -3A2, and CF34-3B and -3B1 Series Turbofan Engines
Unsafe Condition: Main Fuel Control (MFC)
Why matched: GENERAL ELECTRIC AIRCRAFT ENGINES (GE) CF34-1A, CF34-3A, -3A1, -3A2, and CF34-3B and -3B1 Series Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines CF34 Series Turbofan Engines
Unsafe Condition: Failure of Buna-N O-rings due to degradation, potential overspeed conditions without improved MFC protection, or inadequate venting leading to engine performance issues.
Why matched: Airworthiness Directives; General Electric Aircraft Engines CF34 Series Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines CF34 Series Turbofan Engines
Unsafe Condition: Manufacturing discrepancies have led to increased stress levels, prompting a cyclic life analysis that identified potential HPC spool and disk cracking, which could result in an uncontained engine ...
Why matched: Airworthiness Directives; General Electric Aircraft Engines CF34 Series Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines CF34 Series Turbofan Engines
Unsafe Condition: High Pressure Compressor (HPC) spool and disk cracking, which could result in an uncontained engine failure and damage to the aircraft.
Why matched: Airworthiness Directives; General Electric Aircraft Engines CF34 Series Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines CF34 Series Turbofan Engines
Unsafe Condition: The location of the reworked vent groove is ineffective, and the use of Buna-N O-rings may lead to uncommanded engine accelerations, potentially causing engine overspeed, uncontained engine failure...
Why matched: Airworthiness Directives; General Electric Aircraft Engines CF34 Series Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines CJ610 Turbojet and CF700 Series Turbofan Engines
Unsafe Condition: Unapproved combustion liner assemblies, part number 6008T94G03, with inner and outer shells manufactured using substituted materials and non-conforming cooling slots, dilution holes, and geometric ...
Why matched: Airworthiness Directives; General Electric Aircraft Engines CJ610 Turbojet and CF700 Series Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines CJ610 Turbojet and CF700 Series Turbofan Engines
Unsafe Condition: could result in an engine fire.
Why matched: Airworthiness Directives; General Electric Aircraft Engines CJ610 Turbojet and CF700 Series Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines CF700 Series Turbofan Engines
Unsafe Condition: Overspeed of the aft fan disk can result in an uncontained engine failure and damage to the aircraft.
Why matched: Airworthiness Directives; General Electric Aircraft Engines CF700 Series Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines CF700 Series Turbofan Engines
Unsafe Condition: Uncontained fan blades separated from the engine during an overspeed due to potential overspeed of the aft fan disk.
Why matched: Airworthiness Directives; General Electric Aircraft Engines CF700 Series Turbofan Engines
Airworthiness Directives; General Electric Company GE90 Series Turbofan Engines
Unsafe Condition: Cracks in the compressor discharge pressure (CDP) manifold, Part Numbers 1686M48G10 or 1686M48G11, can initiate around outer diameter bolts and propagate, leading to liberated material that causes ...
Why matched: Airworthiness Directives; General Electric Company GE90 Series Turbofan Engines
Airworthiness Directives; General Electric Company CF34 Series Turbofan Engines
Unsafe Condition: Fan disk rupture, engine failure, and damage to the aircraft due to exceeding the allowable operating cyclic life limit for affected fan disks.
Why matched: Airworthiness Directives; General Electric Company CF34 Series Turbofan Engines
Airworthiness Directives; General Electric Company CF34 Series Turbofan Engines
Unsafe Condition: HPC stage 1 rotor disk rupture leading to engine failure and damage to the aircraft.
Why matched: Airworthiness Directives; General Electric Company CF34 Series Turbofan Engines
Airworthiness Directives; General Electric Aircraft Engines CT7 Series Turboprop Engines
Unsafe Condition: Cracks in the disk holes of stage 1 and 2 gas generator turbine (GGT) disks could lead to stage 1 or 2 GGT disk failure, resulting in uncontained engine failure and damage to the aircraft.
Why matched: Airworthiness Directives; General Electric Aircraft Engines CT7 Series Turboprop Engines
Airworthiness Directives; General Electric Aircraft Engines CT7 Series Turboprop Engines
Unsafe Condition: Gas generator turbine stage 2 forward cooling plate failure, which could result in an uncontained engine failure.
Why matched: Airworthiness Directives; General Electric Aircraft Engines CT7 Series Turboprop Engines