Airworthiness Directive · Amendment 39-19051 · Main rotor gearbox
Airbus Helicopters
This AD applies to Model EC225LP helicopters, certificated in any category.
We are adopting a new airworthiness directive (AD) for Airbus Helicopters Model EC225LP helicopters. This AD requires modifying the emergency lubrication system (EMLUB). This AD was prompted by two incidents of emergency ditching after there was a warning of a loss of oil pressure and a false EMLUB failure. The actions of this AD are intended to address an unsafe condition on these products.
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
(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.
