Airworthiness directives › 2011-26-02
AD 2011-26-02 Airworthiness Directives; Turbomeca Arriel 1 Series Turboshaft Engines
Applicability*9
This AD applies to Turbomeca Arriel 1A, 1A1, 1B, 1C, 1C1, 1C2, 1D, 1D1, and 1S1 turboshaft engines that have incorporated Modification TU347.
Compliance
(1) After the effective date of this AD, do not install into any engine gas generator second stage turbine discs, P/N 0 292 25 040 0, that do not have the “CFR” marking and have 4,000 or more CIS since-new. (2) After the effective date of this AD, do not install into any engine gas generator second stage turbine discs, P/N 0 292 25 040 0, that have the “CFR” marking and have 6,500 or more CIS since-new.
Required actions
The Manager, Engine Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request.
Unsafe condition
(1) Comply with this AD within the compliance times specified, unless already done. (2) Remove from service the GG second stage turbine discs, part number (P/N) 0 292 25 040 0, that do not have the “CFR” marking before exceeding 4,000 cycles-in-service (CIS) since-new. (3) Remove from service gas generator second stage turbine discs, P/N 0 292 25 040 0, that have the “CFR” marking before exceeding 6,500 CIS since-new.
Affected ADs
This AD revises AD 2010-19-06, Amendment 39-16434.
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1