COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 150, F150, 152 & F152 Series Aeroplanes AD/CESSNA 150/45 STOL Conversion Wing Stall Fence 10/96 Applicability: Any model fitted with "Bush Conversions Inc." Short Take Off and Landing (STOL) kit installed in accordance with FAA STC SA1371SW. Requirement: Measure the height of the wing stall fence at the trailing edge. If the height exceeds 32.5 mm (1.28 inches) install a smaller fence in accordance with a scheme approved pursuant to CAR35 through a District Office of the Authority. Note 1. FAA AD 96-12-23 refers. Note 2. The diagram below is extracted from the FAA AD for guidance. Compliance: Within 100 hours time in service after 12 September 1996. Background: This Directive is issued to prevent modified aircraft from entering a stall condition due to excessive stall fence height, which could result in loss of control of the aircraft.