COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Piper PA-34 (Seneca) Series Aeroplanes AD/PA-34/17 Fuel Quantity Placard - Replacement 11/75 Applicability: Model PA34-200 with S/Nos. 34-7250001 to 34-7450220. Model PA34-200T with S/Nos. 34-7570001 to 34-7570308. Document: Piper SB No. 438. Compliance: Within 100 hours time in service after 28 November 1975.