Inquiries & Recommendations

Ngā ketuketutanga me ngā tūtohunga

This report examines 3 derailments due to washouts and slips (occurrences 02-101, 02-102 and 02-103) caused by inclement weather in the South Island during January 2002. No serious injuries were sustained but the opportunity existed in each case for more serious and potentially life threatening injuries to have occurred. Safety issues identified by these incidents included: • the lack of a formalised early warning river flow level notification process for the Rangitata River • the lack of staff available to respond to operating contingencies during the holiday period

This report examines 3 separate track buckle occurrences on the South Island coal route during the summer of 2001/2002. Two of the track buckles resulted in derailments. Safety issues identified by these incidents included: • the need for staff training to ensure they recognise and respond to visible track defects • the need to protect continuous welded rail, formed at unknown neutral temperature • the need to control tamping and lining to ensure track is not realigned leaving increased compressive stress in the rails.

On Monday 3 December 2001 at about 1430, Robinson R44 helicopter ZK-HTK was on a commercial transport flight from a remote campsite in the Urewera National Park to Ruatahuna, carrying two hunters whose recovery had been delayed by bad weather. While flying over the highest terrain en route, where the weather was probably worst, the helicopter collided with trees, fell to the ground and burned. One survivor was rescued 2 days later. The pilot's low experience probably contributed to his perseverance with the flight in conditions of low cloud and poor visibility.

On Thursday 29 November 2001, at about 0930, Cessna A185E Skywagon ZK-JGI took off from Motueka Aerodrome on a local parachuting flight. Shortly after take-off, at about 100 feet, ZK-JGI had a sudden and total power loss. Unable to re-establish power, the pilot guided the aircraft to a nearby kiwifruit orchard. After clipping trees the aircraft struck the ground heavily, resulting in the pilot and 4 parachutists receiving serious injuries and 1 parachutist sustaining minor injuries. The power loss was due to the pilot inadvertently selecting the fuel Off before the flight.

On Friday 16 November 2001, at about 0445, the yacht "Toolka-T" fouled the towline between the tug "Wainui" and barge "Sea-Tow 11" and was carried along the towline until it collided with the bow of the barge. The "Toolka-T" passed under the barge and sank as a result of the collision. The collision occurred off Takatu Point while the "Toolka-T" was southbound towards Gulf Harbour and the "Wainui" was northbound from Auckland to a sand excavation site north of Cape Rodney.

On Wednesday 31 October 2001, at about 0800, Air National Chieftain ZK-RDT, operating as Origin 457, was on a scheduled passenger flight from New Plymouth to Auckland when the cabin door opened in flight. Passengers held the door in a slightly ajar position for about 10 minutes while the aeroplane was landed at Auckland. The incident resulted from wear and distortion of door latch components, which had not been detected and rectified.

[A preliminary investigation showed that the circumstances were not likely to have significant implications for transport safety. Consistent with section 13 of the TAIC Act the Commission discontinued the investigation and no report was published.]

On Wednesday 19 September 2001, at about 0705, a collision occurred between a light locomotive and a private motorcar at Egmont Tanneries Ltd private level crossing between Stratford and Inglewood on the Marton to New Plymouth Line. The motor vehicle had made a right-hand turn from State Highway 3 which ran parallel to the railway line and entered the unprotected level crossing immediately in front of the approaching locomotive.

On Friday, 14 September 2001, at about 0325, 2 trans Cook Strait ships, the passenger and freight ferry "Arahura" and the cargo ship "Kent", encountered each other at the eastern entrance to Tory Channel. The outward-bound "Kent" had given the inward-bound "Arahura" permission to enter, in order that they might pass each other inside the entrance. The master of the "Kent" subsequently had difficulty maintaining control at slow speed and ventured into the area of restricted navigation at the entrance to Tory Channel, which hindered the safe navigation of the "Arahura".

At about 0615 on Thursday, 13 September 2001, an unattached loaded log wagon on the leading end of a shunt being propelled into a siding at Stillwater was routed onto the main line at a damaged turnout and rolled 450 m downgrade on the Midland Line. Thick fog was present at the time and the loss of the wagon was not realised until 0645 and it was not located until 0700. The safety issues identified included: • rail service operations being carried out by non-qualified contractors at Stillwater

On Tuesday, 11 September 2001, at about 1130, ZK-HWI, a Bell Jetranger 206B II helicopter took off normally for a chemical spraying flight. On board the helicopter were an instructor pilot and a trainee who was the pilot flying the helicopter. Shortly after take-off, when the helicopter was climbing away, the drive to the engine power turbine tachometer generator failed, causing the power turbine gauge indication to decrease. The instructor pilot, believing the helicopter was losing power, immediately took control of the helicopter and instinctively lowered the collective lever.

On Friday 31 August 2001 at about 1440, the commercial jet boat "Shotover 21" was proceeding down Shotover River at about 60 km/h with the driver and 11 passengers on board, when the engine stopped suddenly. With no propulsion the driver lost directional control of the boat and it continued in a straight line for some 60 m before colliding with a rock face at about 30 km/h. Five of the passengers suffered serious injuries, the other passengers suffered minor injuries and the driver was unhurt. The boat was extensively damaged.