Introduction
On 13 June 2001, a Cresco aircraft (registration ZK-TMO) arrived at Te Aroha Station, located 25 km west of Gisborne, New Zealand, to perform topdressing operations. The property owner briefed the pilot and conducted two observation flights over the areas to be sown. The owner specifically cautioned the pilot against turning left after take-off from the airstrip.
Flight Operations
Spreading commenced at 1600 hours on 13 June, with 14 flights carrying 1800 kg loads completed without difficulty. Operations resumed at 0720 hours on 14 June, again with 1800 kg loads, in an area to the left (east) of the airstrip. After a refuel later that morning, during the third flight, the loader driver observed the pilot performing a partial load jettison after take-off, resulting in a shorter sortie. However, upon return, the pilot did not request a reduced load for the next flight.
Accident Sequence
At approximately 1145 hours NZST, the aircraft was reloaded and commenced take-off. The loader driver watched about half the take-off roll before turning to prepare for the next load. He did not see the aircraft again until a pall of black smoke caught his attention. After an unanswered radio call, he ran toward the smoke, located to the left and below the elevated strip. He found the aircraft inverted in a small stream, burning fiercely. The pilot was visible inside but could not be reached due to intense heat.
Investigation Findings
- The pilot held appropriate licensing and ratings and was fit for the flights.
- The aircraft had a valid airworthiness certificate and was maintained per requirements.
- No pre-accident defects were found.
- The pilot had turned left after take-off, contrary to the owner's advice.
- The advice was based on a previous accident under virtually identical circumstances.
- After take-off, insufficient space existed for the aircraft to accelerate to a speed allowing the bank angle needed to clear terrain in level flight or a climb.
- The accident was not survivable.