AD/S-76/20 - Power Plant Mounting Supports - Inspection and Modification
1AD/S-76/20 - Power Plant Mounting Supports - Inspection and Modification
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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 Sikorsky S-76 Series Helicopters
AD/S-76/20 Power Plant Mounting Supports - Inspection
and Modification
8/81
Applicability: All models S-76 fitted with powerplant support components having P/Nos as listed in Sikorsky Customer Service Bulletin No. 76-71-6.
Document: Sikorsky CSB No. 76-71-6.
Compliance: Within 100 hours time in service after 31 August 1981 unless already accomplished.
Background: The manufacturer has received reports of entrapped water causing corrosion in the tubes of the powerplant support assemblies.