COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Bell Helicopter Textron Canada (BHTC) 222 Series Helicopters AD/BELL 222/22 Flapping Bearing-to-Yoke Attachment Bolts 7/99 Applicability: Model 222, serial numbers 47006 through 47089; Model 222B, serial numbers 47131 through 47156; and Model 222U, serial numbers 47501 through 47574. Requirement: Perform an initial inspection of the flapping bearing-to-yoke attachment bolts in accordance with Part I of BHTC Alert Service Bulletin 222-98-83 or 222U-98-54, as applicable; both bulletins dated 12 October 1998. Replace bolts that show evidence of thread damage, shank wear, or corrosion. Note: Transport Canada AD CF-99-12 refers. Compliance: At the next scheduled 150-hour inspection after 15 July 1999, but not later than 31 December 1999; unless already accomplished. Note: Repetitive inspections at 1,200 hour intervals will be included in a forthcoming revision to the Maintenance Manual. This Airworthiness Directive becomes effective on 15 July 1999. Background: Transport Canada received a report of a post-flight inspection finding that one of the four flapping bearing-to-yoke attachment bolts had fractured.