COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Piper PA-28 Series Aeroplanes AD/PA-28/59 Fuel Selector Valve - Inspection and Replacement 12/76 Applicability: Model PA-28-235 with S/Nos. 28-10001 to 28-761057 fitted with Airborne fuel valve P/N 1-H65-2, (Piper P/N 492-259) by Piper SB No. 444. Document: 1. Piper SB No. 519A; or 2. FAA AD 76-18-04, Amendment 39-2709. Compliance: Within 100 hours time in service after 31 December 1976.