Commonwealth legislation

AD/DHC-8/39 Amdt 1 - Outboard Flaps Front Spar and Top Skin Fasteners

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Commonwealth

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legislative instrument

Plain English Summary

4/10 complexity

Requires operators of specified Bombardier (De Havilland) DHC‑8 models to follow Transport Canada AD CF‑95‑05R1: replace incorrect rivets with higher‑strength fasteners on certain outboard flap front spars and top skins, and reduce the flap‑extended speed (VFE) for Model 301. A Flight Manual amendment is also required.

This affects aircraft owners/operators and maintenance organisations, who pay for repairs, modifications and paperwork and must meet revised compliance times; Amendment 1 adjusts compliance timing and resource allowances but keeps the core corrective action the same.

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Current sections

Direct links to the current provisions in AD/DHC-8/39 Amdt 1 - Outboard Flaps Front Spar and Top Skin Fasteners.

AD/DHC-8/39 Amdt 1 - Outboard Flaps Front Spar and Top Skin Fasteners

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Bombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes

AD/DHC-8/39

Amdt 1

Outboard Flaps Front Spar and Top Skin Fasteners 1/96

Applicability: DHC-8 aircraft Model 301.

DHC-8 aircraft Models 311, 314, and 315, equipped with outboard flap assemblies without Modification 8/2066 installed, and with part numbers and serial numbers listed in the accompanying table of the Requirement Document.

Requirement: Action in accordance with the technical requirements of Transport Canada AD CF- 95-05R1.

A Flight Manual amendment is required.

Note: De Havilland SB 8-57-24 Revision A refers.

Compliance: As specified in the Requirement Document with a revised effective date of 4 January 1996.

Background: Reports have shown that incorrect rivets were used during manufacture of the affected flap assemblies. Incorrect rivets are replaced with ones of higher strength for the Models 311, 314, and 315, and the flap extended speed, VFE, is permanently reduced for the Model 301.

Amendment 1 is issued in response to a revision of the Requirement Document which addresses short compliance time concerns as well as the resources required for the structural modification.

Source text

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

1 AD/DHC-8/39 Amdt 1 - Outboard Flaps Front Spar and Top Skin Fasteners