Airworthiness directives › 2022-02-04
AD 2022-02-04 Airworthiness Directives; Airbus Helicopters
Models named: AS350B, AS350B2, AS350B3, AS350BA. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Airbus Helicopters Model AS350B, AS350B2, AS350B3, and AS350BA helicopters, certificated in any category, serial numbers 1241, 1525, 1601, 1708, 1825, 1910, 1973, 2056, 2072, 2361, 2394, 3170, 3223, 3479, 3789, 9005, 9010, and 9035.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) Emergency AD 2021-0123-E, dated May 7, 2021 (EASA AD 2021-0123-E).
Unsafe condition
This AD was prompted by a report that a modification of the electrical wiring of the hydraulic system was wrongly embodied on certain helicopters, and a wiring non-conformity caused the solenoid of the tail rotor (TR) load compensator to de-energize when the “HYD” cut-off switch was activated. The FAA is issuing this AD to address the unsafe condition, which if not corrected, could lead to loss of hydraulic power in TR control during application of the emergency procedure for loss of main rotor (MR) hydraulic, or during hydraulic off training when the “HYD” cut-off switch is activated, possibly resulting in loss of 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