Pilot Debrief

CUBCRAFTERS CC11-160 near Lake City, CO — 2015-09-29

Final reportGAA15CA292
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Date
2015-09-29
Location
Lake City, CO, USA
Airport
CD32
Aircraft
CUBCRAFTERS CC11-160
Registration
N4HW
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Takeoff roll

Probable cause

The pilot's failure during takeoff to attain sufficient airspeed for conditions, and to maintain yaw control and a positive rate of climb, resulting in a loss of directional control, an uncontrolled descent, and collision with trees and terrain.

NTSB narrative

The pilot of the tailwheel-equipped airplane was departing from a mountain airport situated in a valley. The pilot reported that during takeoff, he rotated about 52-54 miles per hour, and about 20 feet above the ground, a strong crosswind from the left pushed the airplane to right of the runway centerline. The pilot attempted to overcome the effect of the wind with control inputs, but the airplane collided with trees on the right side of the runway. The airplane sustained substantial damage to the wings, fuselage, and empennage. An FAA inspector who went to the accident site reported that the pilot rotated approximately 400 feet and impacted trees about 621 feet from where the takeoff roll was initiated. The FAA inspector estimated there was at least an additional 2,000 feet of useable runway remaining. The field elevation was 9,300 feet MSL and density altitude was calculated as 12,600 feet. The performance charts for this airplane stop at 8000 feet and required extrapolation for the airport elevation and weather conditions. Calculations by the FAA inspector estimated a minimum takeoff roll of 425 feet before rotation under ideal conditions for weather and mixture setting. A witness reported the pilot was "hot dogging" and was trying to show off when the pilot took off in a very short distance and climbed at a steep angle. The witness reported that the airplane aerodynamically stalled, collided with trees and came to rest in a ditch. The witness also reported that the wind was calm at the time of the takeoff and accident. The airplane came to rest on private property that abutted the airport, and the witness reported that the landowner dragged the airplane onto airport property with a tractor. The airplane wreckage was not photographed by the FAA inspector before it was moved. Eight other airplanes of similar make and model departed the field about the time of the accident without incident. The pilot reported no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

Analysis

Primary failure mode
Loss of control
First missed decision gate
Pilot could have aborted takeoff due to crosswind conditions.

NTSB coding

Evidence available

  • Photos
  • 3 docket documents
View NTSB final reportView NTSB docket

Docket documents3

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