COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Eurocopter SA341 and SA342 (Gazelle) Series Helicopters AD/GAZELLE/10 Amdt 1 Emergency Flotation Gear - Inflation Head 1/94 Applicability: All models fitted with inflation heads P/n 74929 with no serial number or serial numbers below 10 000, and junction nuts P/n 75441/75834. Requirement: Action in accordance with Eurocopter France SA341-342 SB 05.19 Rev. 2. Note: DGAC AD 80-061-028(B) R1 refers. Compliance: At the next inspection for maintenance release issue, or prior to each installation after 6 January 1994; thereafter at periods not exceeding 500 hours aircraft time in service. Note 1. Initial compliance was for a one time inspection within 100 hours time in service after 30 June 1980. Note 2. The repetitive inspection compliance may be aligned with the T1 inspection. Background: Stress corrosion cracking may occur in the union nuts of the inflation head. Amendment 1 modifies the inspection procedure and introduces a periodic requirement.