COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Bell Helicopter Textron 205 Series Helicopters AD/BELL 205/62 42 Degree Tail Rotor Drive Gearbox 9/95 Applicability: All Bell 205 and civil registered UH-1 series helicopters fitted with P/N 204-040-003- 023 or 204-040-003-037 42 degree tail rotor drive gearbox. Requirement: Action in accordance with the technical requirements of FAA AD 95-10-07 Amdt 39- 9224 or FAA AD 95-10-08 Amdt 39-9225 as applicable. Note 1: FAA AD 95-10-08 Amdt 39-9225 refers to UH-1 series helicopters. Note 2: A torque event is defined as a take-off or an (Internal or External) load lifting event. Compliance: As specified in the Requirement Document with revised effective date of 17 August 1995. Background: Failure of the 42 degree tail rotor drive gearbox has caused a number of helicopter accidents.