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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. Engines

Unsafe Condition: Failure of life-limited parts, which could result in failure of one or more engines, loss of thrust control, and loss of the helicopter.

Why matched: Airworthiness Directives; Safran Helicopter Engines, 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: 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: 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: The presence of coking in the fuel manifold assemblies, which can reduce fuel flow and cause engine flameouts.

Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines

Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines

Unsafe Condition: ruptured front support pins on the accessory gearbox front support

Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines

Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines

Unsafe Condition: During an ARRIUS 2B2 engine ground run check, the ``Degrade'' indicator illuminated and unusual vibration occurred. At the same time, bluish smoke and debris came out of the exhaust pipe. Both engi...

Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines

Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines

Unsafe Condition: Flaking of the cadmium coating of electrical magnetic plugs head Part Number (P/N) 9 520 01 154 5 was detected. Investigation results indicate that this was the result of manufacturing deficiency. ...

Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines

Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines

Unsafe Condition: Reports of fuel leaks originating from the drain valve assembly (DV) on certain Arriel engines.

Why matched: Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines

Airworthiness Directives; Safran Helicopter Engines, S.A. Turboshaft Engines

Unsafe Condition: Low returning spring rate of the needle of the hydro-mechanical metering unit (HMU), which enables needle oscillation during rapid engine deceleration, leading to uncommanded in-flight shutdown (IF...

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