Airworthiness directives › 2015-12-02
AD 2015-12-02 Airworthiness Directives; Bell Helicopter Textron Canada Limited
Applicability*9
This AD becomes effective July 14, 2015.
Compliance
(1) The Manager, Safety Management Group, FAA, may approve AMOCs for this AD. Send your proposal to: James Blyn, Aviation Safety Engineer, Regulations and Policy Group, Rotorcraft Directorate, FAA, 2601 Meacham Blvd., Fort Worth, Texas 76137; telephone (817) 222-5110; email james.blyn@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) Bell Alert Service Bulletin No. 206L-05-134, Revision A, dated April 9, 2007, which is not incorporated by reference, contains additional information about the subject of this AD. For service information identified in this AD, contact Bell Helicopter Textron Canada Limited, 12,800 Rue de l'Avenir, Mirabel, Quebec J7J1R4; telephone (450) 437-2862 or (800) 363-8023; fax (450) 433-0272; or at http://www.bellcustomer.com/files/. You may review a copy of the service information at the FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 76137. (2) STC No. SR00036SE, amended October 20, 1995; and reissued January 23, 2014, may be found on the Internet at http://www.regulations.gov in Docket No. FAA-2013-0489. (3) The subject of this AD is addressed in Transport Canada Civil Aviation (TCCA) AD No. CF-2005-28R1, dated June 14, 2007. You may view the TCCA AD on the Internet at http://www.regulations.gov in Docket No. FAA-2013-0489.
Unsafe condition
Within 30 days: (1) Install placard P/N 230-075-213-117, or equivalent, on the instrument panel directly below the dual tachometer. (2) Revise the Operating Limitations section of the Rotorcraft Flight Manual (RFM) by inserting a copy of this AD into the RFM or by making pen and ink changes as follows: (i) In the Power Plant section, beneath the Power Turbine RPM header, add: Avoid continuous operations 71.8% to 91.5%. (ii) In the Placards and Decals section, add: “AVOID CONT OPS 71.8% TO 91.5% N2” with the location identification “Location: Instrument Panel.”
Affected ADs
This AD defines the unsafe condition as a third stage turbine vibration, which could result in turbine failure, engine power loss, and subsequent loss of control of the helicopter.
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