Airworthiness Directive · Amendment 39-18884 · Fire detection
Sikorsky Aircraft Corporation Helicopters
This AD applies to Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters, serial numbers 920006 through 920298, certificated in any category.
We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters. This AD requires installing an engine flame detector bracket assembly and harness assembly. This AD was prompted by reports of false fire warnings. The actions of this AD are intended to prevent 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.
Within 180 hours time-in-service:
(1) For helicopters with a No. 2 engine outboard flame detector bracket assembly (bracket) (either part number (P/N) 92070-30033-014, or both P/N 92070-30033-011 and 92070-30033-015) installed, and with a No. 2 engine flame detector harness assembly (harness) P/N 92310-04201-041 installed: If the harness was installed before the bracket, replace the harness.
(2) For helicopters with a bracket (either P/N 92070-30033-014, or both P/N 92070-30033-011 and 92070-30033-015) installed, and without a harness P/N 92310-04201-041 installed: Remove the harness and install harness P/N 92310-04201-041 by following the Accomplishment Instructions, section 3.C.1, of Sikorsky S-92 Customer Service Notice 92-094, Revision B, dated June 14, 2016 (CSN 92-094).
(3) For helicopters without a bracket (either P/N 92070-30033-014, or both P/N 92070-30033-011 and 92070-30033-015) installed, and with a harness P/N 92310-04201-041 installed:
(i) Install a bracket P/N 92070-30033-014 by following the Instructions, paragraph D, of Sikorsky Special Service Instructions No. 92-107G, Revision G, dated February 25, 2016 (SSI 92-107G).
(ii) Replace the harness.
(4) For helicopters without a bracket (either P/N 92070-30033-014, or both P/N 92070-30033-011 and 92070-30033-015) installed, and without a harness P/N 92310-04201-041 installed:
(i) Install a bracket P/N 92070-30033-014 by following the Instructions, paragraph D, of SSI 92-107G.
(ii) Remove the harness and install harness P/N 92310-04201-041 by following the Accomplishment Instructions, section 3.C.1, of CSN 92-094.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
