Airworthiness directives › 2021-08-17
AD 2021-08-17 Airworthiness Directives; Airbus Helicopters
Models named: AS332L2. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Airbus Helicopters Model AS332L2 helicopters with main gearbox (MGB) part number (P/N) 332A323001.XX with a main reduction gear module (module) P/N 332A323011.XX that has free wheel shaft P/N 332A322191.20 installed, where “XX” stands for any two digit dash number, certificated in any category. Note 1 to paragraph (c): Free wheel shaft P/N 332A322191.20 is also referred to as modification 07-53016.
Compliance
Comply with this AD within the compliance times specified, unless accomplished previously.
Required actions
(1) Within 50 hours time-in-service (TIS) after the effective date of this AD, install a placard on the instrument panel prohibiting use of the ENG1 “TRAINING IDLE” switch in accordance with Figure 3 of Airbus Helicopters Alert Service Bulletin AS332-01.00.95, Revision 1, dated July 29, 2020. (2) Replace the MGB with an airworthy MGB at the following compliance time: (i) If the free wheel shaft has accumulated less than 950 total hours TIS, before the free wheel shaft accumulates 1,000 total hours TIS; or (ii) If the free wheel shaft has accumulated 950 or more total hours TIS, within 50 hours TIS after the effective date of this AD. (3) As of the effective date of this AD, do not install a right free wheel shaft P/N 332A322191.20 on any helicopter unless the free wheel shaft has accumulated less than 1,000 total hours TIS. (4) If you replace the MGB with a MGB that does not have free wheel shaft P/N 332A322191.20 installed, you may remove the placard required by paragraph (g)(1) of this AD.
Unsafe condition
This AD defines the unsafe condition as wear on the ramps and roller cages of the MGB free wheel shaft. This condition could result in reduced one engine inoperative (OEI) power from by the right engine following an in-flight shut-down of the left engine, resulting in reduced control of the helicopter.
Affected ADs
None.
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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