146 results found (885ms)
Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.) Engines
Unsafe Condition: The unsafe condition involves the affected fuel control unit (FCU) potentially failing due to a manufacturing defect, which could result in engine power loss or shutdown.
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.) Engines
Unsafe Condition: Clogging of the preference injector, if not detected and corrected, and if combined with a sharp reduction in the fuel flow during the flight after a pilot command, could lead to a flameout in 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.)
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: The accumulated service life of certain critical parts was underestimated, leading to potential operation beyond part life and failure of affected parts, possibly resulting in uncontained debris re...
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.) 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.) Engines
Unsafe Condition: Failure of the engine due to insufficient maintenance tasks and airworthiness limitations.
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.) Engines
Unsafe Condition: Reports of false engine fire warnings due to fire detectors that do not conform to the type design, which could lead to commanded in-flight engine shut-down, possibly resulting in damage to the hel...
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: Reports of false engine fire warnings due to a manufacturing non-compliance on the fire detectors, which caused a shift of the detection threshold towards temperature values that are lower than spe...
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: Reports of false engine fire warnings due to a manufacturing non-compliance on the fire detectors, which caused a shift of the detection threshold towards temperature values that are lower than spe...
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: 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: Error messages on the full authority digital engine control (FADEC) B digital engine control unit (DECU), caused by blistering of the varnish on the DECU circuit board.
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: non-conforming fuel filter pre-blockage pressure switches, manufactured before December 2016, can cause its non-activation in case of fuel system contamination, with consequent opening of the by-pa...
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: Failure to accomplish the instructions in the applicable Maintenance and Overhaul Manuals could result in an unsafe condition.
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: cracks were found on the soldered joints of torque conformation boxes, which could lead to engine in-flight shutdown, possibly resulting in reduced control of the helicopter.
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