NTSB Identification: BFO90LA031.
The docket is stored on NTSB microfiche number 41103.
Accident occurred Thursday, March 01, 1990 in GRAFTON, WV
Probable Cause Approval Date: 09/04/1992
Aircraft: CESSNA 152, registration: N65538
Injuries: 1 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 PILOT WAS PRACTICING AIRWORK DURING A SOLO TRAINING FLT, WHEN A PARTIAL LOSS OF POWER OCCURRED. HE APPLIED CARB HEAT AND POWER WAS TEMPORARILY RESTORED BEFORE IT DECREASED AGAIN. UNABLE TO MAINTAIN POWER, THE PLT SELECTED A FIELD FOR A FORCED LANDING. THE FIELD HAD A STEEP SLOPE. DURING THE LANDING, THE NOSE GEAR CONTACTED THE TERRAIN FIRST AND THE AIRPLANE NOSED OVER. DURING TESTS, THE CARB HEAT OPERATED NORMALLY. TEMP AND DEW POINT AT THE TIME OF THE ACCIDENT WERE 31 DEGS F AND 22 DEGS F, RESPECTIVELY. ACCORDING TO CARB ICE PROBABILITY CHARTS, THIS CONDITION WAS CONDUCIVE TO CARB ICE DURING GLIDE POWER SETTINGS.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

THE PILOT'S IMPROPER USE OF CARBURETOR HEAT, WHEN OPERATING AT REDUCED POWER IN CONDITIONS WHICH WERE CONDUCIVE TO CARBURETOR ICE.

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