ASN Wikibase Occurrence # 359822
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| Date: | Thursday 8 September 1994 |
| Time: | 11:15 LT |
| Type: |  Cessna T210M |
| Owner/operator: | Private |
| Registration: | N761GQ |
| MSN: | 21062249 |
| Year of manufacture: | 1977 |
| Engine model: | CONTINENTAL TSIO-520-MCR |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Willacooche, GA -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Brunswick, GA (KSSI) |
| Tifton, GA (KTMA) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE IN CRUISE FLIGHT, THE ENGINE OIL PRESSURE DECREASED AND THE OIL TEMPERATURE INCREASED. THE ENGINE LOST POWER RAPIDLY, AND QUIT. A FORCED LANDING WAS MADE TO A FOUR LANE HIGHWAY. THE PILOT SAID HE MANEUVERED THE AIRPLANE TO AVOID A COLLISION WITH ELECTRICAL POWER LINES AND VEHICLES. THE LANDING GEAR WAS NOT EXTENDED TO AVOID CATCHING ON POWER LINES. AFTER TOUCHDOWN ON THE HIGHWAY, A VEHICLE BACKED INTO THE ROAD AND WAS STRUCK BY THE RIGHT WING TIP. POST ACCIDENT EXAMINATION OF THE ENGINE REVEALED THAT THE NUMBER 2 PISTON EXHIBITED SIGNS OF PRE-IGNITION /DETONATION, I.E. A HOLE WAS BURNED IN THE PISTON. TESTING OF THE ENGINE FUEL SYSTEM DEMONSTRATED THAT IT WAS CAPABLE OF PROVIDING REQUIRED FUEL TO THE ENGINE. THE PILOT REPORTED THAT THE AIRPLANE WAS FULL OF 100LL FUEL WHEN THE FLIGHT DEPARTED. EXCESSIVE FUEL LEANING, DURING IMPROPER USAGE OF THE MIXTURE CONTROL, WILL RESULT IN ENGINE DETONATION.
Probable Cause: THE PILOT'S EXCESSIVE FUEL LEANING DURING IMPROPER USE OF THE MIXTURE CONTROL, WHICH RESULTED IN PRE-IGNITION/DETONATION AND A TOTAL LOSS OF ENGINE POWER. FACTORS WERE THE ELECTRICAL WIRES AND VEHICLES.
Accident investigation:
 |
|
Sources:
NTSB ATL94LA169
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 15:01 | ASN Update Bot | Added |
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