N6051F

Substantial
None

Ayres SR2-T34 S/N: T34-193

Accident Details

Date
Monday, May 31, 1993
NTSB Number
FTW93LA171
Location
HARRISBURG, AR
Event ID
20001211X12407
Coordinates
35.559658, -90.719970
Aircraft Damage
Substantial
Highest Injury
None
Fatalities
0
Serious Injuries
0
Minor Injuries
0
Uninjured
1
Total Aboard
1

Probable Cause and Findings

THE LOSS OF ENGINE POWER DUE TO THE FAILURE OF THE REDUCTION GEAR ASSEMBLY DUE TO FATIGUE. A FACTOR WAS THE LACK OF SUITABLE TERRAIN FOR THE FORCED LANDING.

Aircraft Information

Registration
N6051F
Make
AYRES
Serial Number
T34-193
Model / ICAO
SR2-T34

Registered Owner (Historical)

Name
MID CONTINENT AIRCRAFT CORPORATION
Address
HWY 84 EAST
Status
Deregistered
City
HAYTI
State / Zip Code
MO 63851
Country
United States

Analysis

On May 31, 1993, at approximately 1530 central daylight time, an Ayres Corporation SR2-T34 airplane, N6051F, was substantially damaged during a forced landing following a loss of engine power while in cruise flight near Harrisburg, Arkansas. The commercial pilot, sole occupant of the airplane, was not injured. Visual meteorological conditions prevailed for the aerial application flight.

According to the operator, the airplane departed the May private airstrip near Harrisburg, with a full load of pesticides. While en route to the field to be sprayed, the engine oil pressure dropped and the engine chip detector illuminated. Within a few seconds, the engine lost power and the pilot performed a forced landing to a field. During the landing flare, the airplane struck a levee resulting in structural damage to the airframe and engine firewall.

The engine was preserved and transported to an approved repair station for further inspection and examination. Inspection of the magnetic plug and the screen confirmed that ferrous deposits were present. A complete engine teardown was accomplished. According to the engine manufacturer's representative, "the failure of the engine appeared to originate in the first stage planetary system." A detailded examination of the first stage sungear revealed "some areas of fatigue along the axis of the splines, which resulted in the jamming of the first stage sun gear."

The wreckage was verbally released to the owner at the accident site.

Data Source

Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# FTW93LA171