Pressures of over ambitious training, poorly integrated equipment with no policy on its use, u/s transponders and reduced radar coverage all feature in this airprox with two ASW helicopters.
Four days before the accident the MRBs had been removed and re-installed. No RTB was done. While ground running at a remote site, increasing vibration triggered the pilot to lift off. NR was low and the helicopter tumbled down a slope.
The GCAA AAIS discuss the cause of a precautionary ditching and examine the performance of flotation and survival features.
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