Pilot Debrief

LAMB-ROBIN BOWERS FLY BABY near Guthrie, OK — 2016-04-03

Final reportGAA16CA180
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Date
2016-04-03
Location
Guthrie, OK, USA
Airport
GOK
Aircraft
LAMB-ROBIN BOWERS FLY BABY
Registration
N359RJ
Category
Airplane
Highest injury
Minor
Fatalities
0
Phase of flight
Initial climb

Probable cause

The pilot's exceedance of the airplane's critical angle of attack during the initial climb, which resulted in an aerodynamic stall and a collision with terrain.

NTSB narrative

The pilot reported that during the initial climb, the airplane aerodynamically stalled. He reported that he was unable to recover the airplane due to the low altitude and the airplane impacted a field off the departure end of the runway. The airplane sustained substantial damage to the fuselage, right wing, and right elevator. The pilot verified that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. As a safety recommendation, the pilot reported that using full power on takeoff would have prevented the accident. The Federal Aviation Administration has published the Airplane Flying Handbook FAA-H-8083-3A (2004). This handbook discusses stalls and states in part: The key to stall awareness is the pilot's ability to visualize the wing's angle of attack in any particular circumstance, and thereby be able to estimate his/her margin of safety above stall. This is a learned skill that must be acquired early in flight training and carried through the pilot's entire flying career. The pilot must understand and appreciate factors such as airspeed, pitch attitude, load factor, relative wind, power setting, and aircraft configuration in order to develop a reasonably accurate mental picture of the wing's angle of attack at any particular time. It is essential to flight safety that a pilot takes into consideration this visualization of the wing's angle of attack prior to entering any flight maneuver. Stall accidents usually result from an inadvertent stall at a low altitude in which a recovery was not accomplished prior to contact with the surface.

Analysis

Primary failure mode
Loss of control
First missed decision gate
Using full power on takeoff could have prevented the accident.

NTSB coding

Evidence available

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

Docket documents2

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