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NTSB Report
June 6, 1989 · Ryan ST-3KR · N48749
La Salle, CO
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 6, 1989
Injury Outcomes
1 injury (1 serious injury)
Location
La Salle, CO
Aircraft
Ryan ST-3KR
Tail Number
N48749
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
DEN89LA134
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.
NTSB Probable Cause
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.
Full Narrative
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.
Flight
Event TypeAccident
Event Time09:45 MDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRyan ST-3KR
Tail NumberN48749
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsKinner · R-56 · Reciprocating · 160
Seats2
People & Injuries
Injury Summary1 injury (1 serious injury)
Fatal0
Serious1
Minor0
Uninjured0
Total1
Crew 1Age 60 · Third Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility15 sm
CeilingNone
Temperature / Dew Point61 F / 0 C
Altimeter0
Weather SourcePILO