AD/BEECH 77/6 - Engine Mount Assembly to Firewall Attach Bolts
1AD/BEECH 77/6 - Engine Mount Assembly to Firewall Attach Bolts
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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 Beechcraft 77 (Skipper) Series Aeroplanes
AD/BEECH 77/6 Engine Mount Assembly to Firewall Attach Bolts 12/80
Applicability: All model 77 with S/Nos. WA-1 to WA-156, WA-158 to WA-161, WA-163 to WA- 171, WA-173, WA-174, WA-177 and WA-178.
Requirement: Action in accordance with Beechcraft SI No. 1153.
Note: FAA AD 80-21-10 refers.
Compliance: Within 25 hours’ time in service after 30 October 1980.
Background: The engine mount assembly attachment bolts and barrel nuts may have threads which were damaged at initial factory installations.