NTSB Identification: ATL02LA145.
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Accident occurred Sunday, July 28, 2002 in Senoia, GA
Probable Cause Approval Date: 04/15/2003
Aircraft: Cessna 150H, registration: N6486S
Injuries: 2 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
The student pilot and flight instructor performed a simulated engine failure with power at idle. When the throttle was advanced to recover from the descent, the engine did not respond. Attempts to restore engine power were not successful. During the forced landing, the airplane collided with trees. The flight instructor stated carburetor heat was used; the student pilot stated carburetor heat was not used. Examination of the wreckage revealed the tail section was separated, both wingtips displayed crush damage, and fuel was recovered. Examination of the engine revealed no defects that would have prevented normal operation. A review of induction icing probability curves reveals the temperature and dew point reported at the time of the accident fall within the "serious icing, glide power" range. The Owner's Manual for the Cessna 150 states the procedures for descent are as follows: 1. Mixture - rich, 2. Carburetor Heat - apply full heat before closing throttle.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The certificated flight instructor's failure to follow published procedures for the application of carburetor heat, which resulted in a loss of engine power due to carburetor ice formation, and subsequent collision with trees during the forced landing. A factor was the lack of suitable terrain for landing. Full narrative available
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