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-34/5 Stabilator Tip Balance Weight - Inspection 9/72 Applicability: All models with S/Nos. 34-E4 and 34-7250001 to 34-7250335. Document: Piper SB No. 367. Compliance: 1. Initial Inspection - prior to further flight after 12 September 1972. 2. Hardware Replacement - as detailed in requirement document.