Commonwealth legislation

AD/KITFOX/2 - Flaperon Mass Balance

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Mandates owners/operators of Kitfox aircraft not fitted with the WMB 40 to install that flaperon mass‑balance system per the Denney Kitfox Assembly Manual—or an Authority‑approved alternative—by 30 June 1990. It affects aircraft owners, maintenance providers, and the kit supplier.

The rule aims to mitigate reported flaperon flutter; owners bear kit and installation costs and downtime, while the Civil Aviation Safety Authority may approve alternative installation schemes.

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AD/KITFOX/2 - Flaperon Mass Balance

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Kitfox Series Aeroplanes

AD/KITFOX/2 Flaperon Mass Balance 5/90

Applicability: All models not fitted with mass balance system (WMB 40).

Requirement: Carry out installation of flaperons mass balance system (WMB 40) in accordance with wing construction section of Denney Aerocraft Company, Kitfox Assembly Manual, or other scheme approved by the Authority.

Compliance: Prior to 30 June 1990.

Background: Flutter has occurred in both overseas and local aircraft. The company has made standard the fitting of a flaperon mass balance system and provides a kit for retrofit to aircraft not so equipped.

Source text

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