Commonwealth legislation

AD/JT15D/6 Amdt 1 - Fan Blades

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This directive requires owners, operators and maintenance organisations for certain Pratt & Whitney Canada JT15D engine models to carry out the inspections/repairs in Pratt & Whitney Canada Service Bulletin No. 7257 Rev 2 — within 25 flight hours or 15 days after 1 May 1987, and before installing affected fan blades. It aims to prevent fan‑blade failures traced to machine marks at the root fillet. Costs and scheduling burdens fall to operators/maintenance providers; the AD mirrors an earlier Transport Canada emergency directive.

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AD/JT15D/6 Amdt 1 - Fan Blades

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 Canada Turbine Engines - JT15D Series

AD/JT15D/6

Amdt 1

Fan Blades 11/87

Applicability: JT15D-1,-1A,-1B,-4,-4B,-4C and -4D. Requirement: Action in accordance with PWC SB No 7257 Rev 2.

Note: Transport Canada AD CF-87-05R1 refers to SB 7257.

Compliance: Unless already accomplished:

Within 25 flight hours or 15 days after 1 May 1987.

2. Prior to installation in an aircraft.

Background: This Directive was issued to reflect the requirements of Transport Canada Emergency Airworthiness Directive CF-87-05R1. The Canadian Directive was issued following a JT15D fan blade event which apparently resulted from machine marks on the blade root fillet radius.

This Directive is now amended to reflect SB 7257 Rev 2 which further identifies specific engine models affected.

Source text

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

1 AD/JT15D/6 Amdt 1 - Fan Blades