Primary finding
Probable cause
No probable cause available.
Investigator assessment
Analysis narrative
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.
Source record
Factual narrative
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