ASN Wikibase Occurrence # 358162
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| Date: | Wednesday 11 October 1995 |
| Time: | 13:45 LT |
| Type: |  Cessna 172F |
| Owner/operator: | John Watts |
| Registration: | N8740U |
| MSN: | 17252644 |
| Total airframe hrs: | 4748 hours |
| Engine model: | CONTINENTAL O-300-D |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Danbury, WI -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Cumberland, WI (UBE |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT REPORTED THAT HE WAS CRUISING AT 500 FEET ABOVE GROUND LEVEL WHEN THE 'ENGINE STARTED TO RUN ROUGHLY.' HE DECIDED TO LAND THE AIRPLANE AND 'INVESTIGATE THE PROBLEM.' ON LANDING ROLL THE AIRPLANE'S RIGHT WING TIP STRUCK A ROAD SIGN, THAT WAS OBSCURED BY BRUSH, WHICH 'SPUN THE AIRPLANE AROUND TO THE RIGHT.' THE AIRPLANE'S NOSE GEAR STRUCK A SAND EMBANKMENT ON THE ROAD'S EDGE AND NOSED OVER. EXAMINATION OF THE WRECKAGE FOUND THE LEFT MAGNETO REAR COVER HAD SEPARATED FROM THE MAGNETO'S MAIN CASE EXPOSING THE GEARS AND POINTS. THREE OF THE FOUR SCREWS WHICH HELD THE MAGNETO COVER IN PLACE WERE MISSING. THE FOURTH SCREW HAD SHEARED OFF IN THE CASE. BOTH MAGNETOS WERE TESTED FOR SPARK. NO ABNORMALITIES WERE FOUND. EXAMINATION OF FUEL IN THE TANKS SHOWED EVIDENCE OF WATER AND SEDIMENT.
Probable Cause: the partial failure of the left magneto, the road sign, and the road embankment. A factor relating to this accident is the brush which obscured the road sign.
Accident investigation:
 |
|
Sources:
NTSB CHI96LA006
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Mar-2024 10:36 | ASN Update Bot | Added |
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