Airworthiness directives › 2022-05-02
AD 2022-05-02 Airworthiness Directives; Airbus Helicopters (Type Certificate Previously Held by Eurocopter France) Helicopters
Models named: AS350B3, EC130T2. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Airbus Helicopters (type certificate previously held by Eurocopter France) Model AS350B3 and EC130T2 helicopters, certificated in any category, with an ARRIEL 2D engine and with THALES full authority digital engine control (FADEC) part number (P/N) C13165DA00 without amendment A, P/N C13165DA00PC00 without amendment A, or P/N C13165FA00 without amendment B, that has a serial number below 1736, installed. Note 1 to paragraph (c): Helicopters with a Model AS350B3e designation are Model AS350B3 helicopters.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For helicopters with FADEC P/N C13165DA00 without amendment A or P/N C13165FA00 without amendment B installed: (1) Within 25 hours time-in-service after July 29, 2021 (the effective date of AD 2021-11-25), revise the Emergency Procedures of the existing RFM for your helicopter by inserting Appendix 4. of Airbus Helicopters Alert Service Bulletin (ASB) No. AS350-01.00.67 or ASB No. EC130-04A004, each Revision 2 and dated February 17, 2014 (ASB AS350-01.00.67 or ASB EC130-04A004), as applicable to your helicopter model. Inserting a different document with information identical to that in Appendix 4. of ASB AS350-01.00.67 or ASB EC130-04A004, as applicable to your helicopter model, is acceptable for compliance with the requirement of this paragraph. (2) As an optional terminating action for the requirement of paragraph (g)(1) of this AD, install amendment A on FADEC P/N C13165DA00 or amendment B on FADEC P/N C13165FA00. (3) As an optional terminating action for the requirement of paragraph (g)(1) of this AD, install a FADEC unit having P/N C13165DA00 with amendment A, P/N C13165DA00PC00 with amendment A, or ;P/N C13165FA00 with amendment B; or install a FADEC unit other than a FADEC unit having P/N C13165DA00, P/N C13165DA00PC00, or P/N C13165FA00, that has a serial number below 1736.
Unsafe condition
This AD was prompted by a report of failure of an engine digital electronic control unit. The FAA is issuing this AD to prevent incorrect indicator illumination, display failure, and loss of fuel flow regulation (frozen fuel metering unit). The unsafe condition, if not addressed, could result in misleading information to the pilot, rotor overspeed or unavailability of engine power, and subsequent loss of control of the helicopter.
Affected ADs
This AD replaces AD 2021-11-25, Amendment 39-21587 (86 FR 33097, June 24, 2021) (AD 2021-11-25).
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