Cessna T210M N761GQ

Summary

On 8 September 1994 at about 14:15 local time, a Cessna T210M registered N761GQ, operated by Simms, John L., was involved in an accident near Willacooche, Georgia, United States. 2 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

8 September 1994 at 14:15

Classification

Accident

Location

Willacooche, Georgia, United States

Coordinates

31.3393, -83.0391

Aircraft

Cessna T210M

Registration

N761GQ

Category

Airplane

Engines

1

Operator

Simms, John L.

Operating rule

Part 91: General Aviation

Purpose of flight

Business

Phase of flight

Not recorded

Route

Brunswick → Tifton

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

ATL94LA169

Nobody was injured.

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.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

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.

Quoted verbatim from the NTSB record.