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 206/112 Amdt 1 Tail Rotor Yoke 4/89 Applicability: All model 206A, 206B11, 206B111, 206L, 206L-1, 206L-3, Agusta Bell AB206A and AB206B. Requirement: Inspect in accordance with Bell Helicopter Alert Service Bulletin 206-88-41 or 206L-88-51, as applicable. Note: FAA AD 88-23-03 and Italian AD 88-215/AB206-121 refer. Compliance: Unless already accomplished, within 100 hours time in service from 30 April 1989. Background: A number of tail rotor yokes have been manufactured with the blade attaching bolt holes incorrectly located. This amendment raised to include the Agusta Bell 206 series.