COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES American Champion (Aeronca, Bellanca) Series Aeroplanes AD/CHA/18 Airspeed Restriction - Front Wing Strut 1/78 Applicability: Model 7ECA S/Nos. 1 to 722, 725, 723-70 to 1238-78. All model 7GC; All model 7GCA; Model 7GCAA S/Nos. 1 to 198, 200 to 204, 276, 205-70 to 355-78; All model 7GCB; Model 7GCBC with S/Nos. 1 to 201, 205, 207, 202-70 to 1024-78; All model 7HC; Model 7KCAB S/Nos. 1 to 208, 210 to 226, 270, 271, 209-70 to 617-77 except those with front wing struts Bellanca P/N 5-392. Requirement: Action in accordance with Bellanca SL No. C-127. Note: FAA AD 77-20-05, Amendment 39-3069 refers. Compliance: In accordance with Requirement Document.