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NTSB Report
April 24, 1993 · Homer Davis RV4 · N22DD
Danville, VA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
April 24, 1993
Injury Outcomes
No injuries (1 uninjured)
Location
Danville, VA
Aircraft
Homer Davis RV4
Tail Number
N22DD
Operator
H Dan Davis
Injuries
None
Aircraft Damage
Substantial
NTSB Number
NYC93LA091
AFTER COMPLETING A 360 DEGREE TURN AND RETURNING TO LEVEL FLIGHT THE AIRCRAFT'S ENGINE LOST POWER. THE PILOT ELECTED TO MAKE A FORCED LANDING IN A FIELD. THE AIRPLANE TOUCHED DOWN IN A FIELD AND STRUCK A TREE. EXAMINATION OF THE CARBURETOR REVEALED THAT THE NEEDLE VALVE WAS INTERMITTENTLY STICKING ON THE SEAT. FURTHER EXAMINATION REVEALED THAT THE SPRING WIRE CLIP ON THE NEEDLE VALVE WAS NOT STRONG ENOUGH TO OPEN UP THE VALVE WHEN IT GOT STUCK.
NTSB Probable Cause
THE LOSS OF ENGINE POWER DUE TO A STUCK CARBURETOR NEEDLE VALVE; SUBSEQUENT FORCED LANDING IN UNSUITABLE TERRAIN, AND IMPACT WITH A TREE.
Full Narrative
AFTER COMPLETING A 360 DEGREE TURN AND RETURNING TO LEVEL FLIGHT THE AIRCRAFT'S ENGINE LOST POWER. THE PILOT ELECTED TO MAKE A FORCED LANDING IN A FIELD. THE AIRPLANE TOUCHED DOWN IN A FIELD AND STRUCK A TREE. EXAMINATION OF THE CARBURETOR REVEALED THAT THE NEEDLE VALVE WAS INTERMITTENTLY STICKING ON THE SEAT. FURTHER EXAMINATION REVEALED THAT THE SPRING WIRE CLIP ON THE NEEDLE VALVE WAS NOT STRONG ENOUGH TO OPEN UP THE VALVE WHEN IT GOT STUCK.
Flight
Event TypeAccident
Event Time12:00 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHomer Davis RV4
Tail NumberN22DD
Aircraft CategoryAir
DamageSubstantial
OperatorH Dan Davis
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-E3D · Reciprocating · 150
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 28 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 15 kt, gusting 20 kt
Visibility30 sm
CeilingNone
Temperature / Dew Point70 F / 0 C
Altimeter30.00 inHg
Weather SourcePILO