Empty water bucket contributed to New Zealand helicopter crash

New Zealand’s Transport Accident Investigation Commission (TAIC) has determined that an empty water bucket contributed to the cause of a fatal helicopter crash on February 14, 2017.

David Steven Askin was piloting a helicopter for Way To go Heliservices working on a wildfire near Christchurch when it went down in the Port Hills.

Steve Askin
Steve Askin. Way To Go Heliservices photo.

The TAIC determined that a cable from the water bucket struck the tail of the Eurocopter AS350-BA.

The TAIC explained:

In the early afternoon, one of the helicopters, a Eurocopter AS350 ‘Squirrel’, registered ZK-HKW, crashed while the pilot was returning to the dipping pond to refill the firefighting ‘monsoon’ bucket. The helicopter was destroyed and the pilot was killed. Evidence shows that the likely cause of the crash was the empty monsoon bucket swung back into the tail rotor, damaging the tail rotor and causing the loss of the vertical stabiliser from the tail boom. After the loss of the vertical stabiliser, the helicopter gradually rolled to the right and descended until it struck the ground.

The TAIC’s investigation was aided by video from a camera mounted on the aircraft which showed the bucket swinging up toward the tail as the helicopter was enroute to a dip site.

Below is an excerpt from the Stuff website:

An abbreviated mayday call was heard by several pilots about 2.05pm, but it was not clear which radio frequency the call was made on.

The air attack supervisor asked for a role call of all aircraft involved. Askin did not respond.

After a brief search, another pilot found the wreckage of Askin’s helicopter on a steep slope near the head of a gully east of Sugarloaf.

According to TAIC’s report, the helicopter had struck a steep, tussock-covered slope. Main rotor strikes on the slope indicated the helicopter had tumbled further down the slope.

TAIC recommended several solutions, including using heavy ballast slings, and having someone monitor the operation from the ground.

Thanks and a tip of the hat go out to Chad.
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