ASN Wikibase Occurrence # 191075
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| Date: | Wednesday 2 November 2016 |
| Time: | 11:00 |
| Type: |  Aviat A-1B Husky |
| Owner/operator: | Aerial Messages Of Daytona |
| Registration: | N54HY |
| MSN: | 2130 |
| Year of manufacture: | 2001 |
| Total airframe hrs: | 4650 hours |
| Engine model: | Lycoming O-360-A1P |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Seminole State College Driving Track, Seminole County, FL -
 United States of America
|
| Phase: | Landing |
| Nature: | Banner and glider towing |
| Departure airport: | New Smyrna Beach, FL (X50) |
| Orlando, FL (ORL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The commercial pilot reported that, about 10 minutes into the banner tow flight, the engine began to run roughly. He adjusted the throttle, propeller lever, mixture, and carburetor heat; however, the engine started to backfire and continued to lose power. The pilot performed a precautionary landing on a race track; during the landing roll, the airplane struck a fence before coming to rest. The engine continued to operate during the landing roll until the airplane struck the fence.
Postaccident examination of the engine revealed that the No. 1 cylinder top and bottom spark plug electrodes exhibited mechanical damage; no mechanical damage was noted on the other spark plugs. The No. 1 piston looked like it was “sandblasted” compared to the other cylinders. Further disassembly of the engine was performed; no debris was noted in the carburetor box, carburetor, and No. 1 cylinder.
Maintenance was performed on the engine 2 days before the accident to troubleshoot “hard starting, low static RPM, and a rough engine.” The maintenance entry indicated that both No. 1 cylinder spark plugs were damaged and that new spark plugs were installed. A comparison of the photographs of the spark plugs removed from the No. 1 cylinder during maintenance and the spark plugs removed from the No. 1 cylinder after the accident showed similar mechanical damage. Although no debris was found during the postaccident examination, it is likely that both sets of No. 1 spark plugs were damaged by debris in the No. 1 cylinder; the source of the debris could not be located.
Probable Cause: A partial loss of engine power due to debris in the No. 1 cylinder that damaged the spark plugs.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=54HY
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Nov-2016 16:23 | Geno | Added |
| 03-Nov-2016 18:38 | Geno | Updated [Location, Source, Narrative] |
| 03-Nov-2016 18:43 | Geno | Updated [Date, Source] |
| 22-Mar-2019 19:08 | ASN Update Bot | Updated [Time, Operator, Nature, Departure airport, Destination airport, Source, Narrative, Accident report, ] |
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