COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Piper PA-24 (Comanche) Series Aeroplanes
AD/PA-24/42 Flap Extension Limitation - Warning Placard 6/83
Applicability: Models PA-24, PA-24-250, PA-24-260 series which have been modified in accordance with FAA Supplemental Type Certificate SA2495WE (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)”.
2. 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.