Document ID: chunk:federal_register_of_legislation:F2006L02499:body:0:p2
Version: federal_register_of_legislation:F2006L02499
Segment Type: other
Provision Reference: 
Character Range: 3480–4400

May 2005, and EXTEX Service Bulletin T-090, Revision N/C, 23 dated May 2005, pertain to the subject of this Airworthiness Directive.

              Note 2:  FAA AD 2006-13-06 Amdt 39-14659 dated 14 June 2006 refers.
Compliance:      1. At the next time they are disassembled for any reason, or by October 31, 2011, whichever occurs first.

                 2. From the effective date of this Airworthiness Directive.
              This Airworthiness Directive becomes effective on 31 August 2006.

Background:  This Airworthiness Directive results from eleven reports of RRC tie bolt failure due to high-cycle-fatigue.  The requirements of this Airworthiness Directive are intended to prevent tie bolt failure that could cause loss of engine power, resulting in a first stage turbine wheel overspeed and an uncontained engine failure.

James Coyne
Delegate of the Civil Aviation Safety Authority

21 July 2006