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-34/14 Fuel Line Chafing - Inspection 10/74 Applicability: Model PA-34-200 with S/Nos. 34-7250001 to 34-7450209. Document: Piper SB No. 429. Compliance: Within 100 hours time in service after 31 October 1974.