Airworthiness directives › 2018-16-08
AD 2018-16-08 Airworthiness Directives; Leonardo S.p.A. Helicopters (Type Certificate Previously Held By Finmeccanica S.p.A., AgustaWestland S.p.A)
Applicability*9
This AD becomes effective August 20, 2018.
Compliance
(1) The Manager, Safety Management Section, Rotorcraft Standards Branch, FAA, may approve AMOCs for this AD. Send your proposal to: Eric Haight, Aviation Safety Engineer, Regulations and Policy Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 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.
Required actions
(1) Leonardo Helicopters Emergency Alert Service Bulletin (EASB) No. 109EP-153, EASB No. 109S-075, and EASB No 109SP-112, all dated March 8, 2017, and which are not incorporated by reference, contain additional information about the subject of this AD. For service information identified in this AD, contact Leonardo S.p.A. Helicopters, Matteo Ragazzi, Head of Airworthiness, Viale G.Agusta 520, 21017 C.Costa di Samarate (Va) Italy; telephone +39-0331-711756; fax +39-0331-229046; or at http://www.leonardocompany.com/-/bulletins. You may review a copy of the service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy, Room 6N-321, Fort Worth, TX 76177. (2) The subject of this AD is addressed in European Aviation Safety Agency (EASA) Emergency AD No. 2017-0046-E, dated March 10, 2017. You may view the EASA AD on the internet at http://www.regulations.gov by searching for and locating it in Docket No. FAA-2018-0720.
Unsafe condition
(1) Within 5 hours time-in-service (TIS), remove the fan belt from each pulley assembly and, using a borescope inspect the grease shield of each bearing P/N 109G6320L01-101 for a crack, leaking grease, and position of the grease shield. (i) If there is a crack, any leaking grease, or if the grease shield is out of position, before further flight, replace each fan assembly P/N 109-0455-01-103 on both sides of the helicopter with a fan assembly P/N 109-0455-01-101. (ii) If there are no cracks, no leaking grease, and the grease shield is correctly positioned, inspect each bearing P/N 109G6320L01-101 for axial and radial play and freedom of rotation. (A) If there is any axial or radial play, rotation resistance, or binding, before further flight, replace each fan assembly P/N 109-0455-01-103 on both sides of the helicopter with a fan assembly P/N 109-0455-01-101. (B) If there is no play, no rotation resistance, and no binding, within 20 hours TIS, replace each fan assembly P/N 109-0455-01-103 on both sides of the helicopter with a fan assembly P/N 109-0455-01-101. (2) After the effective date of this AD, do not install a fan assembly P/N 109-0455-01-103 on any helicopter.
Affected ADs
This AD defines the unsafe condition as failure of an oil cooler system pulley assembly (pulley assembly) bearing. This condition could lead to failure of a fan assembly, resulting in engine power loss, transmission failure, and loss of control of the helicopter.
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