Commonwealth legislation

AD/PA-30/32 - Flap Extension Limitation - Warning Placard

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legislative instrument

Plain English Summary

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Requires owners/operators of Piper PA‑30 and PA‑39 aeroplanes fitted with the Robertson STOL kit to install a cockpit placard by the flap actuator reading “DO NOT EXTEND FLAPS BEYOND 15 DEGREES (TAKEOFF POSITION)”. The placard can be removed only after fitting a positive flap retraction system per Robertson Service Bulletin 19. The measure is intended to reduce the risk of loss of lateral control from asymmetric flap extension; compliance was required within 25 hours time‑in‑service. Costs and installation responsibility lie with the aircraft owner/operator.

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AD/PA-30/32 - Flap Extension Limitation - Warning Placard

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Piper PA-30 & 39 (Twin Comanche) Series Aeroplanes

AD/PA-30/32 Flap Extension Limitation - Warning Placard 6/83

Applicability: Models PA-30, PA-39 series which have been modified in accordance with FAA Supplemental Type Certificate SA2312WE (Robertson STOL modification kit).

Requirement: 1. To prevent possible loss of aeroplane control due to an asymmetric flap extension or retraction, install a placard on the panel near the flap actuator which reads:

“DO NOT EXTEND FLAPS BEYOND 15 DEGREES (TAKEOFF POSITION)”.

The placard may be removed when a positive flap retraction system is installed in accordance with Robertson Aircraft Corporation Service Bulletin 19 dated 22 October 1982.

Note: FAA AD 82-23-01 refers.

Compliance: Within 25 hours time in service after 16 May 1983.

Background: An accident investigation has shown that a loss of aeroplane lateral control can occur if an asymmetric flap condition is allowed to develop, in subject aircraft fitted with the Robertson STOL modification kit. A Robertson Service Bulletin has been issued in order to overcome the problem.

Source text

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

1 AD/PA-30/32 - Flap Extension Limitation - Warning Placard