Airworthiness Directive · Amendment 39-19212 · Engine oil system
Safran Helicopter Engines, S.A., Turboshaft Engines
This AD applies to Safran Helicopter Engines, S.A., Arrius 2F turboshaft engines, with an oil system electrical magnetic plug magnetic head, part number (P/N) 9520011545, with serial numbers (S/Ns) DU4621 through DU5053 inclusive, installed.
We are adopting a new airworthiness directive (AD) for certain Safran Helicopter Engines, S.A., Arrius 2F turboshaft engines. This AD requires inspection and replacement of the magnetic heads installed on oil system electrical magnetic plugs. This AD was prompted by reports from the manufacturer of a batch of non-conforming magnetic heads installed on electrical magnetic plugs. We are issuing this AD to address the unsafe condition on these products.
(1) Within 15 flight hours or 30 days, whichever occurs first after the effective date of this AD, and then after each flight, inspect the magnetic head installed on the rear electrical magnetic plug in accordance with the Accomplishment Instructions, paragraph 2.4.5, of Safran Helicopter Engines Alert Mandatory Service Bulletin (MSB) A319 79 4840, Version A, dated November 27, 2017.
(2) Within 60 days after the effective date of this AD, replace each affected magnetic head, installed on the front or the rear electrical magnetic plug, with a part eligible for installation in accordance with the Accomplishment Instructions, paragraph 2.4.2, of Safran Helicopter Engines Alert MSB A319 79 4841, Version A, dated November 20, 2017.
(3) After replacement of the magnetic head installed on the rear electrical magnetic plug, as required by paragraph (g)(2) of this AD, the repetitive inspections required by paragraph (g)(1) of this AD are no longer required.
After the effective date of this AD, except as part of the inspection required by paragraph (g)(1) of this AD, do not install a magnetic head, P/N 9520011545, with an S/N DU4621 up to and including DU5053 on any engine.
