Airworthiness directives › 2017-19-21
AD 2017-19-21 Airworthiness Directives; Airbus Helicopters
Applicability*9
This AD becomes effective October 30, 2017.
Compliance
Special flight permits are prohibited.
Required actions
(1) The Manager, Safety Management Section, FAA, may approve AMOCs for this AD. Send your proposal to: Rao Edupuganti, Aviation Safety Engineer, Regulations & Policy Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, Texas 76177; telephone (817) 222-5110; email 9-ASW-FTW-AMOC-Requests@faa.gov. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, we suggest that you notify your principal inspector, or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office, before operating any aircraft complying with this AD through an AMOC.
Unsafe condition
(1) Within 500 hours time-in-service: (i) Replace EMLUB glycol pump part number (P/N) 332A32-5051-00 with EMLUB glycol pump P/N 332A32-5043-00. (ii) Replace EMLUB air pressure switch P/N MA193-00 or MC7014-0-00 with P/N MC7014-1-00, and replace EMLUB glycol pressure switch P/N MA194-01 or MC7015-0-00 with P/N MC7015-1-00. P/N MC7014-1-00 and P/N MC7015-1-00 must be from the same manufacturer. (iii) Modify and re-identify the helicopter wiring harness. Refer to Figure 3 of Eurocopter Alert Service Bulletin No. EC225-05A033, Revision 0, dated July 14, 2013 (ASB EC225-05A033). (iv) Replace MGB lubrication card P/N 704A46580127 with P/N 704A46580146, and MGB lubrication card P/N 704A46580106 with P/N 704A46580146 or -147. (v) Accomplish a functional test of the EMLUB system and the electrical system. (vi) Revise the Emergency Procedures section of the Rotorcraft Flight Manual (RFM) by removing any pages from Section 3 of the RFM that pertain to the emergency procedures in the event of EMLUB activation and by inserting the pages from paragraph 4.C. Appendix 3, of ASB EC225-05A033 into Section 3 of the RFM. (2) Do not install on any helicopter EMLUB glycol pump P/N 332A32-5051-00, air pressure-switch P/N MA193-00 or P/N MC7014-0-00, glycol pressure-switch P/N MA194-01 or P/N MC7015-0-00, or MGB lubrication card P/N 704A46580106 or P/N 704A46580127.
Affected ADs
This AD defines the unsafe condition as a false emergency lubrication system (EMLUB) warning. This condition when associated with a loss of the main gearbox (MGB) oil pressure could result in an unnecessary emergency landing or ditching.
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