111 results found (1093ms)
Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca S.A.)
Unsafe Condition: A missing lubricating and balancing groove on one of the bearings of the fuel control unit (FCU) fuel pump due to a non-conforming manufacturing process, which could result in an uncommanded in-fli...
Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca S.A.)
Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca S.A.) Engines
Unsafe Condition: Inconsistencies between the torque (TQ) and measured gas temperature (MGT) conformation values recorded in the avionics and the values recorded on the engine log cards following replacement of the ...
Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca S.A.) Engines
Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca S.A.) Turboshaft Engines
Unsafe Condition: A difference between the position datum of the fuel metering valve and its measured position could lead to loss of automatic control on both engines installed on an Airbus Helicopters Deutschland (...
Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca S.A.) Turboshaft Engines
Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca S.A.) Turboshaft Engines
Unsafe Condition: deterioration of the splines on the high pressure (HP)/low pressure (LP) pump assembly drive shaft of the HMU, which eventually interrupted the fuel supply to the engine.
Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca S.A.) Turboshaft Engines
Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.), Turboshaft Engines
Unsafe Condition: Positive segregation (freckles) was detected on Stage 2 high-pressure turbine (HPT) disks and Stage 3 turbine wheels manufactured from a certain block of material. This condition, if not corrected,...
Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.), Turboshaft Engines
Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines
Unsafe Condition: Excessive turbine blade vibration may lead to progressive crack initiation on the rear face of the affected turbine wheel, which could result in an un-commanded engine in-flight shut-down and/or re...
Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines
Airworthiness Directives; Safran Helicopter Engines, S.A. (Formerly Turbomeca S.A.) Turboshaft Engines
Unsafe Condition: Rupture of the 41-tooth gear, which forms part of the bevel gear in the engine AGB, leading to failure of the engine AGB, uncommanded in-flight shutdown (IFSD), damage to the engine, and damage to ...
Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A. (Formerly Turbomeca S.A.) Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: An anomaly during the grinding operation required by modification TU376 increases the clearance between the rear curvic coupling of the centrifugal impeller and the fuel injection manifold, potenti...
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: a report of a third stage turbine wheel crack detected during engine overhaul
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Crack initiation on the ferrule of the diffuser part number 0298210100, which propagated and led to ferrule rupture, resulting in contact with and puncture of the main fuel supply line, causing a f...
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Reports of divergent rubbing between the piston shaft small diameter labyrinth and the rear bearing support, which could lead to failure of the labyrinth seal and engine, in-flight shutdown, and lo...
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Crack on the front face of the 3rd stage turbine wheel between two balancing lugs, likely caused by a geometric singularity introduced during the embodiment of Turbomeca mod AB 173 or AB 208.
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Failure of the constant delta-pressure (delta-P) diaphragm of the fuel metering valve, which could result in an uncommanded in-flight shutdown and damage to the helicopter.
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Failure of the centrifugal compressor inducer, which could lead to an uncontained blade release, damage to the engine, and damage to the airplane.
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Rupture of the 41-tooth gear, which forms part of the bevel gear in the engine accessory gearbox (AGB), leading to uncommanded in-flight shutdown (IFSD).
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Loosening of the nut attaching the swivel union to the engine power turbine module M04, leading to oil leakage from the low-pressure oil system and potential in-flight shutdown.
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Reports of uncommanded in-flight shutdowns (IFSDs) due to untimely activation of the tachometer box shut-off system, which could lead to engine failure, IFSD, and loss of control of the helicopter.
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Torque conformation box (TCB) failures caused by cracks on soldered joints of TCB resistors, leading to limited power availability in a One Engine Inoperative (OEI) case and reduced control of the ...
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Deterioration of the gas generator front bearing due to a link loss between the pump driver and the oil pump shaft.
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Failure of the engine accessory gearbox (AGB), specifically the 41-tooth gear forming part of the 41/23-tooth bevel gear, which could lead to in-flight shutdown and damage to the engine, potentiall...
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Incorrect bonding of the nozzle on the ejector assembly of certain serial number (S/N) lubricating devices, which could lead to failure of the ejector assembly nozzle.
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Reports of uncommanded in-flight shutdowns on Turbomeca S.A. Arriel 1 and Arriel 2 engines following rupture of the 41-tooth gear forming the 41/23-tooth bevel gear located in the engine accessory ...
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Failure of the high-pressure (HP) fuel pump/metering valve and module M01 drive gear, caused by deterioration of the splines, which could interrupt fuel supply and lead to engine in-flight shutdowns.
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: failure of the HMU drive gear shaft, which could lead to damage to the engine and damage to the aircraft.
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Unsafe Condition: Reports of ruptures on hydromechanical metering unit (HMU) constant delta pressure valves that have less than 2,000 hours in service.
Why matched: Airworthiness Directives; Turbomeca S.A. Turboshaft Engines