Sun, Aug 12, 2007
An August 1st accident
that downed a Lancair IV appears to have been caused by an
improperly secured oil line. The accident resulted in serious
injuries to the pilot, the sole person onboard.
NTSB Prelim
NTSB Identification: DEN07LA133
14 CFR Part 91: General Aviation
Accident occurred Wednesday, August 01, 2007 in Sylvan Grove,
KS
Aircraft: Walker Lancair IV, registration: N7441W
Injuries: 1 Serious.
This is preliminary information, subject to change, and may
contain errors. Any errors in this report will be corrected when
the final report has been completed.
On August 1, 2007, approximately 1615 central daylight time,
a Walker Lancair IV (file photo of Lancair IV, shown below),
N7441W, piloted by an airline transport-certificated pilot, was
destroyed when it collided with terrain following a loss 3 miles
southeast of Sylvan Grove, Kansas. Visual meteorological conditions
prevailed at the time of the accident. The personal flight was
being conducted under the provisions of Title 14 CFR Part 91
without a flight plan. The pilot was seriously injured. The
cross-country flight originated at Junction City (3JC), Kansas, and
was en route to Santa Barbara, California (SBA).
FAA inspectors who examined the airplane at the accident
site reported finding evidence of catastrophic engine failure due
to oil starvation induced by an unsecured oil line to the wastegate
actuator.
Previously; N7441W was involved in a 2003 landing accident in
which the aircraft impacted a "runway while performing an S-turn
maneuver while landing. The pilot reported he was following another
airplane on final approach to runway 17 and had to perform S-turns
to increase spacing. He noted that runway 17 was narrower than he
was accustomed to, and the perceived aircraft altitude was higher
than it actually was. The pilot reported there was no mechanical
malfunction or failure." In that accident, the NTSB found that the
probable cause appeared to be "runway while performing an S-turn
maneuver while landing. The pilot reported he was following another
airplane on final approach to runway 17 and had to perform S-turns
to increase spacing. He noted that runway 17 was narrower than he
was accustomed to, and the perceived aircraft altitude was higher
than it actually was. The pilot reported there was no mechanical
malfunction or failure."
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