N9797V

Substantial
None

CESSNA 172XP S/N: 1722350

Accident Details

Date
Friday, August 19, 1994
NTSB Number
ATL94LA158
Location
CLARKSBURG, TN
Event ID
20001206X01939
Aircraft Damage
Substantial
Highest Injury
None
Fatalities
0
Serious Injuries
0
Minor Injuries
0
Uninjured
1
Total Aboard
1

Probable Cause and Findings

THE FAILURE OF THE ALTERNATOR DRIVE COUPLING, AND DEBRIS FROM THE FAILED COUPLING THAT LODGED IN THE ENGINE OIL PUMP, RESULTING IN A SHEARED OIL PUMP DRIVE SHAFT. THE ENGINE SUBSEQUENTLY FAILED BECAUSE OF OIL STARVATION.

Aircraft Information

Registration
N9797V
Make
CESSNA
Serial Number
1722350
Engine Type
Reciprocating
Model / ICAO
172XP C172
Aircraft Type
Fixed Wing Single Engine
No. of Engines
1

Registered Owner (Historical)

Name
BRYAN THOMAS E SR
Address
4267 AMBER LN
Status
Deregistered
City
MEMPHIS
State / Zip Code
TN 38111
Country
United States

Analysis

On August 19, 1994, at 1740 central daylight time, a Cessna, N9797V, collided with trees while attempting an emergency landing in a pasture near Clarksburg, Tennessee. The business flight operated under the provisions of 14 CFR Part 91 with a visual flight plan filed. Visual weather conditions prevailed at the time of the accident. The aircraft received substantial damage, the pilot was not injured. The flight departed Nashville, Tennessee, at 1640 hours.

According to the pilot, while flying at 2500 feet enroute to his destination airport, the engine sputtered twice and lost power. After the second occurrence, the pilot selected a pasture for an emergency landing. During the landing rollout, the airplane collided with a fence and trees.

The engine examination revealed that the engine sustained oil starvation damage. Steel and rubber debris from internal engine components were recovered from the engine oil sump. The examination also revealed that the alternator drive gear had sheared and was lodged in the accessary pad opening; the engine oil pump drive shaft had also sheared (see attached inspector's statement).

Data Source

Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# ATL94LA158