COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Sikorsky S-76 Series Helicopters
AD/S-76/42 Upper Fuselage, Station 300 8/86
Applicability: All model S-76A, S/Nos. 76003 to 76007, 760001 to 760338.
Requirement: Inspect and reinforce the upper fuselage at Station 300 in accordance with Sikorsky Alert Service Bulletin No. 76-53-27.
Compliance: Within 500 hours time in service after 31 August 1986.
Background: A stainless steel strap reinforcement is required to help prevent fatigue cracking.