Document ID: chunk:federal_register_of_legislation:F2006B11026:body:0
Version: federal_register_of_legislation:F2006B11026
Segment Type: other
Provision Reference: 
Character Range: 0–2317

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

 Pratt and Whitney Turbine Engines - JT9D Series

                    AIRWORTHINESS DIRECTIVE

 For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

AD/JT9D/32 Combustion Chamber Outer Casing 8/2000

            Applicability: Pratt and Whitney JT9D-3A, -7, -7H, -7A, -7AH, -7F, -7J, -20 and -20J series turbofan engines.

            Requirement:  Perform on-wing ultrasonic inspections of the Combustion Chamber Outer Casing (CCOC) forward flange (L-flange) fillet radius for cracking in accordance with the Technical Requirements of FAA AD 99-15-02 Amendment 39-11221.

            Installation of a CCOC containing improved L-flange P/N 734515 or 056-1133-1 or installation of CCOC with P/N 758479 or CFL758479 constitutes terminating action to the repetitive inspection of FAA AD 99-15-02.

            Note: FAA AD 99-15-02 Amendment 39-11221 refers.

            Compliance:  Initial and repetitive inspections as specified in the Requirement document with a revised effective date of 10 August 2000.

            This Airworthiness Directive becomes effective on 10 August 2000.

            Background:  This Directive raised to mandate a repetitive inspection of the combustion chamber outer casing forward L flange fillet radius for cracking and replacing cracked L flange with serviceable parts. Such cracks could result in an uncontained engine failure and damage to the aircraft.

 Eugene Paul Holzapfel
 Delegate of the Civil Aviation Safety Authority 28 June 2000

 The above AD is notified in the Commonwealth of Australia Gazette on 12 July 2000.