NTSB Identification: MKC83LA075.
The docket is stored on NTSB microfiche number 21424.
Accident occurred Monday, March 07, 1983 in OLLIE, IA
Aircraft: CESSNA 150F, registration: N8803G
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 STUDENT REPORTED THAT THE ENG LOST APRX 500 RPM WHILE HE WAS PRACTICING TURNS & STALLS AT AN ALTITUDE OF APRX 3500 FT MSL. REPORTEDLY, THE SITUATION BECAME WORSE & HE WAS UNABLE TO MAINTAIN ALTITUDE. HE APPLIED CARBURETOR HEAT, BUT IT DID NOT HELP. SUBSEQUENTLY, A PRECAUTIONARY LANDING WAS MADE. DURING THE LANDING ROLL, THE NOSEWHEEL SANK IN SOFT TERRAIN & THE ACFT NOSED OVER. AN EXAM & DISASSEMBLY OF THE ENG DID NOT DISCLOSE ANY EVIDENCE OF A MALFUNCTION OR FAILURE THAT CONTRIBUTED TO THE POWER LOSS. THE TEMP & DEW POINT WERE 40 DEG, RESPECTIVELY. ACCORDING TO ICING PROBABILITY CHARTS, SERIOUS CARBURETOR ICING COULD OCCUR AT GLIDE POWER & SERIOUS CARBURETOR ICING CONDITIONS EXITED FOR CRUISE POWER.

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

CARBURETOR HEAT..IMPROPER USE OF..PILOT IN COMMAND

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

FUEL SYSTEM,CARBURETOR..ICE


Contributing Factors

TERRAIN CONDITION..SOFT


Contributing Factors

WEATHER CONDITION..CARBURETOR ICING CONDITIONS

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