ASN Wikibase Occurrence # 188912
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| Date: | Sunday 24 July 2016 |
| Time: | 09:15 |
| Type: |  Zenair STOL CH 750 |
| Owner/operator: | Private |
| Registration: | N750AZ |
| MSN: | 75-8188 |
| Year of manufacture: | 2014 |
| Total airframe hrs: | 107 hours |
| Engine model: | Continental O-200-A EXP |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Greene County Fairgrounds in Franklin Township, PA -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | Waynesburg, PA (WAY) |
| Waynesburg, PA (WAY) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight instructor and student pilot were conducting a local instructional flight. Following uneventful touch-and-go-landings and a refueling, the student pilot and flight instructor departed again. Shortly after departure, the engine began to vibrate and lose power. The flight instructor took control of the airplane and landed straight ahead. During landing, the airplane impacted a row of tractor tires.
Postaccident examination of the engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation. The atmospheric conditions at the time of the accident were conducive to the accumulation of carburetor icing. The flight instructor stated that he applied carburetor heat once he noted the drop in rpm. After applying carburetor heat and noting the continued loss of rpm, he turned off the carburetor heat to reduce the loss of rpm and to extend the airplane’s glide range. Rapid ice accumulation would have required the carburetor heat to be on for a longer period of time to fully melt the ice and restore full power to the engine. Therefore, it is likely that the carburetor accumulated ice during departure, which resulted in the partial loss of engine power and vibration during the subsequent climb.
Probable Cause: The partial loss of engine power due to carburetor icing.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=750AZ
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Jul-2016 14:10 | Geno | Added |
| 16-Dec-2017 14:54 | ASN Update Bot | Updated [Time, Nature, Departure airport, Destination airport, Source, Narrative] |
| 16-Dec-2017 17:02 | harro | Updated [Source, Narrative] |
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