Document ID: chunk:federal_register_of_legislation:F2006B11011:body:0
Version: federal_register_of_legislation:F2006B11011
Segment Type: other
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Character Range: 0–1244

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

AD/JT9D/18 Low Pressure Turbine Airseal 3/89

 Applicability: JT9D-3A,-7,-7A,-7AH, -7H, -7F, -7J, -20 engines.

 Requirement: Action in accordance with FAA AD 88-24-05 amdt 39-6018, items (a)(1)(2), (b), (c).

            Note: Subject airseals modified in accordance with the requirements of PWA SB 4835 revision 4 are considered to be in compliance with the requirements of this Directive.

             Compliance: 1. Airseals conforming to FAA AD 88-24-05 amdt 39-6018 item (a)(1) - Within the next 500 cycles in service after 1 March 1989.

2.    Airseals conforming to FAA AD 88-24-05 amdt 39-6018 item (a)(2) - At next disassembly of the low pressure turbine module.

3.    FAA AD 88-24-05 amdt 39-6018 items (b), (c) - At next disassembly of the low pressure turbine module.

            Background:  This Directive has been issued to require modification and/or inspection of certain sixth stage low pressure turbine airseals. The Requirement follows advice that airseal rub could result in seal rupture and uncontained engine failure.