AD/BELL 47/91 - Tail Rotor Blade Assembly P/N 47-642-117-1 - Replacement
1AD/BELL 47/91 - Tail Rotor Blade Assembly P/N 47-642-117-1 - Replacement
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Image unavailable in extracted text Bell Helicopter Textron 47 (All Variants) Series Helicopters
AD/BELL 47/91 Tail Rotor Blade Assembly P/N 47-642-117-1 - Replacement
Applicability: All models. Requirement Document Bell Helicopter Alert S.B. 47-84-11.
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Compliance: Within 100 hours time in service after 31 January 1985 or at the next scheduled inspection for maintenance release issue. Whichever is the later.
Background: The manufacturer advises that bonding voids may have occurred in the root areas of tail rotor blade assemblies, S/Nos A-8 through A-72. A bonding void was found during periodic destructive testing.