Federal Register of Legislation
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES
Bell Helicopter Textron 212 Series Helicopters
AD/BELL 212/49 Tail Rotor Driveshaft Hangar Bearings 1/92
DM
Applicability: All models fitted with tail rotor driveshaft bearings.
P/N 204-040-623-003 with a S/N prefix of either "T" or "N" prior to N4000 and all - 005 bearings with a S/N prefix of either "T" or "N".
Requirement: Action in accordance with Bell Alert Service Bulletin 212-91-69 Revision A.
Note: FAA Priority Letter AD 91-24-16 refers.
Compliance: Daily before first flight of the day after 27 November 1991.
Background: A daily inspection of the tail rotor driveshaft bearings has been found necessary following a fatal accident which revealed the possibility of a production batch problem with these bearings.
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