Airworthiness directives › 2014-07-04
AD 2014-07-04 Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Helicopters
Applicability*9
This AD becomes effective May 1, 2014.
Compliance
(1) The Manager, Boston Aircraft Certification Office, FAA, may approve AMOCs for this AD. Send your proposal to: Caspar Wang, Aviation Safety Engineer, Boston Aircraft Certification Office, Engine & Propeller Directorate, FAA, 12 New England Executive Park, Burlington, Massachusetts 01803; telephone (781) 238-7799; email caspar.wang@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 5 hours time-in-service, inspect the electrical wires and the hydraulic lines in the upper deck of the helicopter for chafing between electrical wires and hydraulic lines. If there is chafing between electrical wires and hydraulic lines, before further flight, replace the unairworthy wires or lines with airworthy wires or lines. (2) Within 5 hours TIS, inspect each clamp for correct installation as shown in Figures 1 through 14 of Sikorsky Aircraft Corporation Alert Service Bulletin No. 92-20-001, dated October 27, 2005 (ASB). If clamps are incorrectly installed or missing, before further flight, install clamps by following the Accomplishment Instructions, paragraph 3.A.(4) through 3.A.(17) of the ASB. (3) After each maintenance that requires removing clamps, comply with paragraphs (e)(1) and (e)(2) of this AD.
Affected ADs
This AD defines the unsafe condition as an installation that does not provide adequate clearance to prevent chafing between the high voltage electrical wires and hydraulic lines. This condition could result in fire and subsequent loss of control of the helicopter.
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