COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 210 Series Aeroplanes AD/CESSNA 210/57 Fuel Selector Valve Safety Wire - Installation 5/85 Applicability: Model 210 with S/Nos. 21058819 to 21064535, T210-0198 to T210-0454 and P21000001 to P21000760. Requirement: Cessna SIL SE84-5. Note: FAA AD85-02-07 refers. Compliance: Prior to issue of the next Maintenance Release after 31 May 1985. Background: Loss of fuel selector control, followed by engine fuel starvation can occur should the roll pin connecting the fuel selector rotor shaft to the yoke assembly migrate out of its location. To prevent this possibility, safety wire is fitted to the roll pin thereby ensuring positive retention.