Commonwealth legislation

AD/GAZELLE/16 - Electric Hoist Installation

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This airworthiness directive requires operators of Eurocopter SA341/SA342 (Gazelle) helicopters to modify the electric hoist and perform an electrical bonding check per Aerospatiale Service Bulletin 25-05 (Requirement 1 and 2), and forbids re‑installing the pyrotechnic cable‑cutting squib for personnel winching (Note 1). The Civil Aviation Safety Authority mandates compliance within 50 flight hours (or by 12 March 1992) and recurring bonding checks every 24 months; operators pay the modification, inspection and record‑keeping costs.

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Direct links to the current provisions in AD/GAZELLE/16 - Electric Hoist Installation.

AD/GAZELLE/16 - Electric Hoist Installation

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Eurocopter SA341 and SA342 (Gazelle) Series Helicopters

AD/GAZELLE/16 Electric Hoist Installation 1/92

Applicability: All SA 341 and SA 342 helicopters as specified in the requirement document. Requirement: 1. If not already incorporated, modify the hoist in accordance with paragraph 1 C 1 of

Aerospatiale Service Bulletin 25.05.

Carry out an Electrical Bonding Check in accordance with paragraph 1 C 2 of Aerospatiale Service Bulletin 25-05.

Note 1. Do NOT re-install the pyrotechnic cable cutting squib in accordance with Aerospatiale SB 25-05. AD/SUPP/12 refers.

Note 2: DGAC AD 91-203-035(B) also refers. Note 3: AD/SUPP/13 also refers.

Compliance: Requirement 1. Within 50 hours time in service after 12 January 1992, but no later than 12 March 1992.

Requirement 2. Within 50 hours time in service after 12 January 1992, but no later than 12 March 1992, and thereafter at intervals not exceeding 24 months; and on each occasion following removal and reinstallation of the hoist or the hoist arm to the aircraft.

Background: A number of inadvertent firings of the pyrotechnic cable cutting device on a variety of helicopter electric hoists resulted in the removal of the pyrotechnic device from all hoists when used for personnel winching pending further investigation (AD/SUPP/12 refers). The pyrotechnic cable cut device is however still required to be fitted to hoists when hoisting cargo.

AD/SUPP/13 requires modification and testing of the bonding between the component parts of the Air Equipment Hoist P/No 76370 (all variants). Compliance with this AD (AD/GAZELLE/16) will ensure the integrity of the bonding between the hoist and the aircraft, and reduce the likelihood of un-commanded cable cuts when the pyrotechnic device is fitted for cargo winching. Note however that fitment of the pyrotechnic device for personnel winching is still prohibited by AD/SUPP/12 pending further investigation.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

1 AD/GAZELLE/16 - Electric Hoist Installation