Document ID: chunk:federal_register_of_legislation:F2006B06560:body:0
Version: federal_register_of_legislation:F2006B06560
Segment Type: other
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Character Range: 0–2089

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

 Rolls Royce Turbine Engines - RB211 Series

 AD/RB211/3
 Amdt 2

 Speed and Temperature Governing System 10/99

            Applicability: RB211 engines as detailed in Rolls Royce Service Bulletin Number RB.211-73-4305 Revision 6.

            Requirement: To identify possible dormant failures within the speed and temperature governing system which may prevent response of the governing system to an overspeed; carry out a maintenance test of the speed governing system as described in the Aircraft Maintenance Manual, Chapter 73-21-00, Adjustment/Test. Rolls Royce Service Bulletin Number RB.211-73-4305 Revision 6 refers.

            Note: The requirements of Rolls Royce Service Bulletin Number RB.211-73-4305 Revision 6 have been declared mandatory by the CAA (UK).

            Compliance: Unless previously accomplished; within 750 hours time in service from the effective date of this directive and thereafter at intervals not to exceed 750 hours time in service.

            This Amendment becomes effective on 7 October 1999.

            Background:  This directive was originally issued to require a periodic test of the speed and temperature governing system. The requirement reflected advice of a dormant failure could result in the governing system not responding to an overspeed or over temperature condition.

            Amendment 1 was issued in June 1982 to include the RB211-524D4-19 model.

            This amendment reflects the manufacturer's latest revision to the requirement document. The revision, in part, deletes the requirement to carry out a periodic test of the temperature governing function. Automatic control of the temperature channel is no longer considered essential for the safe operation of the engine.

            Amendment 1 of this Airworthiness Directive became effective 30 June 1982.

            The original issue of this Airworthiness Directive became effective on 31 January 1982.