COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters AD/BELL 206/18 Console Access Panel Attachment Screws - Replacement 7/69 Applicability: All model AB-206A and 206A with S/Nos. referenced in requirement document. Document: Bell SL No. 206A-120. Compliance: Within 50 hours time in service after 13 June 1969. Background: AD/Agusta 206/9 equivalent.