AO-1993-017

Two persons fell while being winched in from the ship "Pacific Ariki", by a hoist installed in Bell 212 helicopter ZK-HNO on 14 November 1993. The ship was at sea 2nm west of Oaonui. The safety issues identified were the effectiveness of the CAA approval of operators and safety audits; the effectiveness of the operators crew training and supervision, the crew's compliance with instructions; the adequacy of existing instructions on winch operation; the dependence of the hoist design on the integrity of the winch cable; the design of hoist control circuitry, and the adequacy of inspection techniques to establish the serviceability of the cable.