Civil Aviation Authority safety investigator Colin
Grounsell examines the wreckage of the Cessna that crashed
on the Arrowtown golf course just under a year ago, killing
pilot Ian Sloan. Photo by James Beech.
The owner/pilot of a Cessna 172 Skyhawk died last year
from a blunt-force head injury and severe facial fractures
after his plane crashed at the Arrowtown golf course, the Civil
Aviation Authority (CAA) has found.
Ian Douglas Sloan (59), of Tauranga, was pronounced dead at
the scene on October 17. His son-in-law, Wayne Candy, and
aviation enthusiast Joan Urquhart sustained serious injuries
in the crash, which destroyed the plane.
The CAA report, prepared by safety investigator Colin
Grounsell and safety investigation manager Ben Smith, said
all three were restrained with seat belts.
However, because of "rotational impact forces", the pilot was
thrown to the right in his seat and the diagonal shoulder
restraint "became ineffective".
"As a result, the pilot received head injuries from striking
the instrument panel."
Mr Sloan, who had 315 hours' flying experience, was piloting
the aircraft as it approached the private airstrip known as
Monks Strip, about 3.15pm on a return trip from Invercargill.
"As the aircraft approached Monks Strip, the passenger seated
in the front right-hand seat [Mr Candy] began to video-record
the flight using his iPhone.
"He continued to record the remainder of the flight,
including the accident sequence."
Stock on the landing area were visible on the recording, and
Mr Sloan carried out a "low pass" to clear them.
Moderate turbulence was encountered near the eastern end of
the airstrip, along with strong crosswinds on the left.
Mr Sloan then increased engine power and altitude, flew the
plane towards Arrowtown and turned around to begin an
approach to land at the airstrip from the opposite direction.
The video recording showed Mr Sloan selected 20deg of wing
flap on his final approach, which was high, and the ground
speed was also higher than "would have normally been
The report said it would have been "prudent" for Mr Sloan to
have conducted a "go-around rather than continue with the
The aircraft touched down about 250m into the 500m airstrip,
and "bounced lightly twice" before settling on the ground.
Mr Sloan increased engine power to full and conducted a
takeoff, having "fully retracted the [wing] flap".
After the craft became airborne he initiated a climb and left
turn to avoid power lines and trees, also contending with a
strong crosswind and moderate turbulence.
"The pilot continued to raise the nose of the aircraft. The
stall warning was heard to sound in the video recording ...
The aircraft then rolled rapidly to the left and pitched down
as the aircraft entered a fully developed wing drop stall.
"As the aircraft rolled and pitched towards the ground, it
was observed in the video recording that the pilot was
holding the elevator control fully aft. The aircraft rapidly
lost altitude and struck the ground."
The CAA concluded Mr Sloan had raised the nose of the
aircraft to "an excessively high angle", but might have had
difficulty establishing a "true horizon" to use as a visual
reference on his climb out, due to the rising terrain of the
Crown Range, the report said.
"It is possible that the pilot may have been fooled by a
false horizon and therefore continued to raise the aircraft's
nose to establish what he perceived to be the correct climb
After the aircraft stalled, Mr Sloan's actions were
"incorrect" for a recovery; "however, there was probably
insufficient altitude available to ensure a safe recovery".
The CAA found Mr Sloan was appropriately licensed to carry
out the flight and was familiar with Monks Airstrip, having
used it for takeoffs and landings about 18 times since the
Moderate turbulence and crosswind conditions encountered at
the time of the incident were "significant factors".
After the incident, a CAA safety recommendation was raised to
develop information for pilots regarding unsupervised
operations at airstrips.
"The prudence of obtaining additional training for airstrip
operations will also be highlighted."
The information would be published in the CAA Vector magazine
later this year.
The CAA has closed the file relating to Queenstown helicopter
pilot Pete Sax.
Mr Sax was investigated after allegations he broke aviation
rules by flying lower than 500 feet in conservation areas,
including the Fiordland and Mt Aspiring National Parks.
Dunedin hunter Jaz Morris had complained after seeing a video
put online by Mr Sax.
The CAA's investigating officer was satisfied there was no
breach of the authority's rules.