LARGE AUSTRALIAN BUSTARD LIKELY BEHIND
FATAL SPRAYING CRASH
written by Adam Thorn | December 17, 2022
An ATSB
investigation into the fatal crash of a spraying aircraft has found evidence
that a large Australian bustard smashed through the cockpit window in the
lead-up to the accident.
An unidentified man
in his 30s died in September when his Air Tractor AT-502B hit the ground near
Chinchilla on Queensland’s Western Downs.
It comes months
after it was revealed a wedge-tailed eagle was likely behind a separate crash
that killed a pilot in Sydney in July. The investigation is only at the
preliminary stage, with a final report set to be published later.
The organisation’s
director of transport safety, Dr Stuart Godley, said, “Should a critical safety
issue be identified during the course of the investigation, the ATSB will
immediately notify relevant parties so appropriate and timely safety action can
be taken.”
The early report
details how the Air Tractor AT-502B, VH-KDR, had been conducting spray runs on
the morning of 19 September 2022.
Around 1200, the
loader at the private airstrip about 24 NM (44 km) southeast of Chinchilla from
where the Air Tractor had been operating attempted to call the pilot to ask
whether they needed more fuel.
Concerned with
having received no response, the loader phoned the operations manager, who in
turn contacted nearby farmers to assist with locating the aircraft.
At about 1215, a
local farmer found the aircraft in the paddock where the pilot had been
spraying. The pilot was killed, and the aircraft was destroyed.
“An ATSB examination
of the accident site found that the aircraft had impacted terrain with the
fuselage in a near vertical attitude, with its propeller and engine buried in
the soft earth, and the wreckage contained to a small area,” said Dr Godley.
Ground scars and
damage to the left wing indicated that the wing struck the ground at about 30°
to the horizontal, and examination of the propeller and engine indicated that
the engine was delivering power at the time of the impact.
There was no
post-impact fire.
“A large bird
carcass was found in the cockpit, and the bird’s wings were located about 300 m
north of the wreckage, in-line with the aircraft’s track,” said Dr Godley.
Biological residue
from the bird was found outside the right cockpit window.
“At the request of
the ATSB, the Australian Centre for Wildlife Genomics at the Australian Museum
analysed biological specimens of the bird, identifying them as being from
an Ardeotis australis, commonly known as an Australian bustard or Plains
turkey.”
The Australian
bustard is a large bird, 80 to 120 cm in height, with an average weight for an
adult of 4.5 kg, with males weighing up to 8 kg. They are capable of
flying but are mostly ground-dwelling.
“The aircraft
operator advised that for the field where the accident occurred, they expected
that it would be sprayed at a height of about 2 m (6 ft) above the ground, to
be just above the weeds.”
Dr Godley noted that
the investigation is continuing, and will include research into the nature of
birdstrikes and similar occurrences.
“Bird strikes
resulting in fatal aircraft accidents are very rare. However, the ATSB is currently investigating a separate accident where a
wedge-tailed eagle bird carcass was located near the accident site of a Bell
LongRanger helicopter, which experienced an in-flight break-up near Maroota,
New South Wales on 9 July 2022.”
The ATSB said its continuing
investigation into the Chinchilla accident would include further review and
examination of electronic components recovered from the accident site, operational
documentation and maintenance records.
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