NTSB Identification: ATL05FA082.
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Accident occurred Monday, May 16, 2005 in Nashville, TN
Probable Cause Approval Date: 12/20/2005
Aircraft: Piper PA-18-150, registration: N5990Z
Injuries: 2 Fatal.
NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
According to a witness, after takeoff from runway 01, the airplane made a quick climbing turn. The nose of the airplane pitched up 80 degrees, the left wing
dropped down, the nose of the airplane pitched down, and the airplane was heard colliding with the ground. Examination of the airframe, flight controls, engine
assembly, and accessories revealed no anomalies. The flaps were extended 10-degrees. The gross weight power off stalling speed with full flaps in the
Super Cub 150 is 43 M.P.H.; with flaps up the stalling speed increases about 4 M.P.H. Review of the Piper Flight Test Manual for the PA-18-150 did not note any
test data that was conducted with 10-degrees of flaps. Tetrahydrocannabinol (Marihuana) 0.004 (ug/ml, ug/g) was detected in the blood. An unspecified amount
of Tetrahydrocannabinol carboxylic acid (Marihuana) was detected in the blood. Tetrahydrocannabinol carboxylic acid (Marihuana) 0.0106 (ug/ml, ug/g) was
detected in the liver.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot's failure to maintain airspeed while maneuvering resulting in an in flight loss of control, stall, and collision with trees and the ground. A factor was the pilot's impairment due to drugs. Full narrative available
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