Commonwealth legislation

AD/DHC-1/33 Amdt 1 - Tailplane Support Struts

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Owners and maintainers of English-built De Havilland DHC-1 Chipmunk aircraft must carry out mandatory inspections of the tailplane support struts after discovery of internal corrosion that could cause in-flight loss of control.

Inspections follow British Aerospace TNS CT(C1) 186 issue 2, including external checks, rework and NDI (e.g., ultrasound/X‑ray). First check was due within 3 months of 11 Nov 1993; repeat every 7 years.

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Current sections

Direct links to the current provisions in AD/DHC-1/33 Amdt 1 - Tailplane Support Struts.

AD/DHC-1/33 Amdt 1 - Tailplane Support Struts

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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De Havilland DHC-1 (Chipmunk) Series Aeroplanes

AD/DHC-1/33

Amdt 1

Tailplane Support Struts 12/93

Applicability: English production Chipmunk.

Requirement: Action in accordance with British Aerospace Mandatory TNS CT(C1) 186 issue 2.

Compliance: 1. Unless already accomplished in accordance with the initial issue of this Directive and holding a BAe radiographic acceptable assessment from that inspection; within three months after 11 November 1993.

2. Seven years, with repeat inspections at periods not exceeding seven years after:

the installation of new struts, or

b. compliance with either the initial issue or this amendment of this Directive.

Note: Compliance date for the initial issue of this Directive was 20 November 1992.

Background: A case of internal corrosion in a tailplane attachment strut was reported. The initial issue of the Directive required an external visual inspection, rework and NDI. Amendment 1 introduces a repeat inspection, and revises and clarifies the technical requirements via the TNS.

Source text

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

1 AD/DHC-1/33 Amdt 1 - Tailplane Support Struts