COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Piper PA-38 (Tomahawk) Series Aeroplanes AD/PA-38/8 Amdt 3 Engine Mount Tubes - Inspection and Modification 4/81 Applicability: All models PA-38-112 with S/Nos. 38-78A0001 to 38-78A0678. Document: Piper SB No. 617B. Compliance: As per requirement document. Background: Amendment "B" of Piper SB No. 617 extends the affected aeroplanes to additional serial numbers.