COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Chrislea CH-3 Series Aeroplanes AD/CH-3/2 Amdt 1 Aileron Mass Balance - Inspection NK Applicability: All series 2 not modified in accordance with Chrislea Service Bulletin No. 5 - Addendum 1. Document: 1. Chrislea SB No. 5; or 2. ANO 105.1.13.1.6.2. Compliance: At intervals not exceeding 50 hours time in service.