548 results found (931ms)
Airworthiness Directives; International Aero Engines AG Engines
Unsafe Condition: Certain 3rd stage high pressure compressor (HPC) rotor blades were susceptible to shroud wear and blade failure.
Why matched: Airworthiness Directives; International Aero Engines AG Engines
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: Accelerated high-pressure turbine (HPT) rotor stage 1 blade deterioration and airfoil distress in engines operating in the South Asia region.
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: Wear on the No. 3 bearing spring finger housing can lead to high levels of non-synchronous vibration (NSV), which could induce high-pressure compressor (HPC) stall.
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: aborted takeoffs after engines did not advance to the desired takeoff fan speed due to icing in the pressure sensor line, which, if not addressed, could result in loss of engine thrust control and ...
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; International Aero Engines LLC Engines
Unsafe Condition: Fan blade fracture events, which can result in a fuel leak and uncontrolled engine fire, leading to damage to the airplane.
Why matched: Airworthiness Directives; International Aero Engines LLC Engines
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: cracks in the high-pressure turbine (HPT) rotor stage 1 blades
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; International Aero Engines AG Engines
Unsafe Condition: A quality escape following angled ultrasonic inspections performed on certain high-pressure turbine (HPT) 1st-stage hubs and HPT 2nd-stage hubs, which could result in an uncontained hub failure, re...
Why matched: Airworthiness Directives; International Aero Engines AG Engines
Airworthiness Directives; Cameron Balloons Ltd. Fuel Cylinders
Unsafe Condition: Cracks on the upper hex portion of pressure relief valve (PRV) adaptors could lead to uncontrolled leakage of liquefied petroleum gas (LPG), resulting in an in-flight fire and consequent emergency ...
Why matched: Airworthiness Directives; Cameron Balloons Ltd. Fuel Cylinders
Airworthiness Directives; International Aero Engines AG Engines
Unsafe Condition: Uncontained failure of a high-pressure turbine (HPT) 1st-stage hub that resulted in high-energy debris penetrating the engine cowling.
Why matched: Airworthiness Directives; International Aero Engines AG Engines
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: fracture and subsequent uncontained failure of certain HPT rotor stage 1 disks and a certain compressor rotor stages 6-10 spool due to material properties reduced by iron inclusion
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: The unsafe condition on these products is the potential for HPT stage 1 disks, forward outer seals, and compressor rotor stages 6-10 spools to have reduced material properties due to iron inclusion...
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; Thommen Aircraft Equipment AG Digital Air Data Computers
Unsafe Condition: Occurrences of AC32 Digital ADCs that stopped functioning due to the power module failing at temperatures below -20 degrees Celsius.
Why matched: Airworthiness Directives; Thommen Aircraft Equipment AG Digital Air Data Computers
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: a quality escape for certain low-pressure turbine (LPT) disks made from forgings with nonconforming grain size
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: The aft arm of the high-pressure turbine (HPT) rotor interstage seal had failed due to a non-conforming surface condition in the fillet area coupled with higher-than-expected operating stress due t...
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: A quality escape involving certain high-pressure compressor (HPC) stage 2 seals manufactured without detailed finish machining, which could result in deeper rubs and mechanical damage to the seal t...
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; Bell Textron Inc. and Various Restricted Category Helicopters
Unsafe Condition: The failure of a tension torsion (TT) strap, which can result in loss of a main rotor blade and subsequent loss of control of the helicopter.
Why matched: Airworthiness Directives; Bell Textron Inc. and Various Restricted Category Helicopters
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: Loss of thrust control during go-around due to significantly higher than expected fuel nozzle coking creating back pressure in the fuel system, triggering the fuel pump relief valve to open and red...
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; Various Airplanes
Unsafe Condition: an un-commanded automatic pitch trim runaway when the autopilot was first engaged, which could result in un-commanded automatic pitch trim runaway and loss of control of the airplane.
Why matched: Airworthiness Directives; Various Airplanes
Airworthiness Directives; International Aero Engines, LLC
Unsafe Condition: The fracture of a low-pressure compressor (LPC) 1st-stage integrally bladed rotor (IBR-1) caused by an aerodynamic excitation from a misaligned inlet guide vane (IGV) located directly upstream of t...
Why matched: Airworthiness Directives; International Aero Engines, LLC
Airworthiness Directives; International Aero Engines, AG Engines
Unsafe Condition: Failure of the high-pressure compressor (HPC) 7th-stage integrally bladed rotor (IBR-7) due to a nickel powdered metal anomaly, similar in nature to an anomaly previously observed on March 18, 2020...
Why matched: Airworthiness Directives; International Aero Engines, AG Engines
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: Detection of melt-related freckles in the billet, which may reduce the life of certain high-pressure turbine (HPT) rotor interstage seals.
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; International Aero Engines, LLC Engines
Unsafe Condition: Operating in a condition where the HPC 2nd stage rotors and HPC 4th stage rotors have potentially degraded knife-edge seals and abrasive coating of the rear wing 4th stage rotor due to having been ...
Why matched: Airworthiness Directives; International Aero Engines, LLC Engines
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: Wear on the No. 3 bearing spring finger housing can lead to high levels of non-synchronous vibration (NSV), which could induce high-pressure compressor (HPC) stall.
Why matched: Airworthiness Directives; CFM International, S.A. Engines
Airworthiness Directives; International Aero Engines, LLC Engines
Unsafe Condition: The condition, if not addressed, could result in uncontained hub failure, release of high-energy debris, damage to the engine, damage to the airplane, and loss of the airplane.
Why matched: Airworthiness Directives; International Aero Engines, LLC Engines
Airworthiness Directives; CFM International, S.A. Engines
Unsafe Condition: Electrical arcing on certain life-limited critical parts, including CDP seals, HPC stage 3 disks, and HPT rear shafts, could result in premature fracture, uncontained part release, engine damage, a...
Why matched: Airworthiness Directives; CFM International, S.A. Engines