Airworthiness Directive

AD 2011-27-01: Turbomeca Turboshaft Engines

Airworthiness Directives; Turbomeca Turboshaft Engines

Effective: Jan 27, 2012
Published: Dec 23, 2011
Registered aircraft: 17

Models this AD may apply to

AI-extracted — verify against original

Matched from the AD's applicability section. Applicability must be confirmed by a mechanic against the aircraft's records.

Engines

TURBOMECA ARRIEL 1B

Only with: M03 modules modified by TU 76 or TU 202, not modified by TU 148, and fitted with a repaired 2nd stage turbine NGV (see Turbomeca MSB No. A292 72 0829, Version B).
Only with: M03 modules modified by TU 76 or TU 202, not modified by TU 148, and fitted with a repaired 2nd stage turbine NGV (see Turbomeca MSB No. A292 72 0829, Version B).

Applicability

From the AD text

This AD applies to Turbomeca Arriel 1B turboshaft engines with M03 modules modified by TU 76 or TU 202, and not modified by TU 148, and if fitted with a repaired 2nd stage turbine nozzle guide vane (NGV). The M03 module contains the 2nd stage turbine NGV, 1st stage turbine disc, and 2nd stage turbine disc. Guidance on determining if an engine has an unrepaired 2nd stage turbine NGV installed can be found in paragraph 1.C. of Turbomeca Mandatory Service Bulletin (MSB) No. A292 72 0829, Version B, dated December 13, 2010.

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