Commonwealth legislation

AD/JT9D/32 - Combustion Chamber Outer Casing

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

What it does: This AD requires operators of Pratt & Whitney JT9D-3A, -7 and related series engines to perform on‑wing ultrasonic inspections of the combustion chamber outer casing forward L‑flange fillet radius for cracking; installing specified improved CCOC part numbers terminates the repetitive inspections.

Operators pay for inspections and any replacements; the CASA delegate issued the directive and set an effective date of 10 August 2000. The action implements FAA AD 99‑15‑02 (Requirement; Compliance).

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Current sections

Direct links to the current provisions in AD/JT9D/32 - Combustion Chamber Outer Casing.

AIRWORTHINESS DIRECTIVE

View image in the official source

View image in the official source
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 Casi

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.

Signature of Eugene Paul Holzapfel Delegate of the Civil Aviation Safety Authority

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 28 June 2000

View image in the official source

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

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

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

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.

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.

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.