NTSB Identification: DEN89LA134.
The docket is stored on NTSB microfiche number 39381.
Accident occurred Tuesday, June 06, 1989 in LA SALLE, CO
Probable Cause Approval Date: 06/28/1991
Aircraft: RYAN ST-3KR, registration: N48749
Injuries: 1 Serious.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE PRIVATE PLT WAS FLYING HIS ANTIQUE AIRPLANE ON A LOCAL FLIGHT TO CHECK THE COMPASS. THIS PLANE HAD BEEN UNDER RESTORATION FOR AN EXTENDED TIME PRIOR TO THIS FLIGHT.DURING FLIGHT, THE ENGINE LOST POWER AND THE PLT MADE A FORCED LANDING IN AN ALFALFA FIELD. AFTER ROLLING 200 FT IN 18 INCH HIGH ALFALFA, THE PLANE NOSED OVER. A POST ACCIDENT INSPECTION REVEALED EVIDENCE THAT THE FUEL TANK VENT WAS CLOGGED BY AN INSECT NEST (DIRT), WHICH RESTRICTED THE FLOW OF FUEL. AFTER THE VENT WAS CLEANED, THE ENGINE RAN NORMALLY.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FOREIGN MATERIAL (INSECT NEST) BLOCKING THE FUEL SYSTEM VENT, WHICH RESULTED IN A RESTRICTION OF FUEL FLOW AND FUEL STARVATION. A RELATED FACTOR WAS THE ALFALFA CROP IN THE EMERGENCY LANDING AREA.

Index for Jun1989 | Index of months