Airworthiness directives › 2013-19-16
AD 2013-19-16 Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters
Applicability*9
This AD becomes effective November 6, 2013.
Compliance
(1) The Manager, Boston Aircraft Certification Office, FAA, may approve AMOCs for this AD. Send your proposal to: Michael Schwetz, Aviation Safety Engineer, Boston Aircraft Certification Office, Engine & Propeller Directorate, FAA, 12 New England Executive Park, Burlington, Massachusetts 01803; telephone (781) 238-7761; email michael.schwetz@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
Joint Aircraft Service Component (JASC) Code: 2620, Extinguishing System.
Unsafe condition
Within 120 days: (1) Modify the No. 1 engine forward firewall center discharge tube in accordance with the Accomplishment Instructions, Paragraph B, of Sikorsky Alert Service Bulletin 92-26-004, dated June 4, 2012 (ASB). (2) Inspect the outboard discharge tube and determine if it is correctly positioned as depicted in Figure 3 of the ASB. If it is not correctly positioned, correct the positioning in accordance with the Accomplishment Instructions, Paragraph D, of the ASB.
Affected ADs
This AD defines the unsafe condition as failure of the No. 1 engine forward firewall center fire extinguisher discharge tube to discharge an extinguishing agent for complete coverage of the No. 1 engine compartment area. This condition could result in a fire not being extinguished and subsequent loss of helicopter control.
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