Commonwealth legislation

AD/JT9D/17 Amdt 2 - Fan Containment Shield

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Commonwealth

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legislative instrument

Plain English Summary

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This airworthiness directive requires operators of Pratt & Whitney JT9D‑7R4D, D1, E, E1, E4 and H1 series engines to have an improved fan containment shield fitted in accordance with PWA Service Bulletin JT9D‑7R4‑72‑312 Rev 6. Compliance must occur at the next scheduled engine shop visit and no later than 31 December 1990. The amendment accepts earlier compliance under prior revisions and notes that later revisions may include alternative installation procedures, so engine owners pay for the retrofit and maintenance providers must follow the specified service bulletin.

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AD/JT9D/17 Amdt 2 - Fan Containment Shield

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Pratt and Whitney Turbine Engines - JT9D Series

AD/JT9D/17

Amdt 2

Fan Containment Shield 8/90

Applicability: JT9D - 7R4D, D1, E, E1, E4, H1 series engines.

Requirement: Install an improved fan containment shield in accordance with the requirements of PWA SB No JT9D - 7R4 - 72 - 312 Rev 6.

Note 1: Compliance with the requirements of a previous revision of the Requirement document is considered as compliance with the Requirements of this Directive.

Note 2: FAA AD 87-23-05 R1 refers.

Compliance: At next scheduled engine shop visit, but no later than 31 December 1990.

Background: This amendment reflects advice that additional procedures are available which permit alternative methods of installing the improved fan containment shield. These alternative procedures are published in subsequent revisions to Requirement document PWA SB No JT9D-7R4-72-312. Rev 2.

Engines already in compliance with the Requirements of CAO 106 AD/JT9D/17 Amdt 1 are considered to be in compliance with the Requirements of this Amendment.

Source text

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

1 AD/JT9D/17 Amdt 2 - Fan Containment Shield