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NTSB Report
September 30, 1989 · Universal Stinson 108-1 · N8607K
Hudson, CO
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 30, 1989
Injury Outcomes
1 injury (1 minor injury), 1 uninjured
Location
Hudson, CO
Aircraft
Universal Stinson 108-1
Tail Number
N8607K
Operator
Vernon Hoppes
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
DEN89LA226
THE PLT (PIC) & THE PREVIOUS OWNER/PLT (PAX) WERE FLYLING THE ACFT FOR FAMILIARIZATION. THEY TOOK OFF TO THE SOUTH WITH THE WIND FROM 180 DEG AT 15 GUSTING 20 KTS. DENSITY ALT WAS APRX 7600 FT. THE PAX SAID THAT DURING THE INITIAL CLIMB AT ABOUT 200 FT AGL, THE PLANE ENTERED A 'DOWNDRAFT.' THE PIC SAID THE ACFT BEGAN A DSCNT WITH A HIGH SINK RATE. ALSO, HE SAID THE ENG RPM 'STARTED TO DECREASE' & THE ENG LOST POWER. THE PAX SAID THE ENG SOUNDED LIKE IT 'LOADED UP' DURING THE ENCOUNTER WITH THE DOWNDRAFT, BUT THAT IT CONTD RUNNING. THE PLT MANEUVERED THE ACFT TO THE RIGHT TO LAND IN AN ALFALFA FIELD. DURING THE LANDING, THE ACFT NOSED OVER & CAME TO REST INVERTED. A POST-ACDNT EXAM OF THE ENG PROVIDED NO EVIDENCE TO EXPLAIN THE RPRTD LOSS OF POWER.
NTSB Probable Cause
PARTIAL LOSS OF ENGINE POWER FOR AN UNKNOWN REASON. A FACTOR RELATED TO THE ACCIDENT WAS: THE ALFALFA CROP.
Full Narrative
THE PLT (PIC) & THE PREVIOUS OWNER/PLT (PAX) WERE FLYLING THE ACFT FOR FAMILIARIZATION. THEY TOOK OFF TO THE SOUTH WITH THE WIND FROM 180 DEG AT 15 GUSTING 20 KTS. DENSITY ALT WAS APRX 7600 FT. THE PAX SAID THAT DURING THE INITIAL CLIMB AT ABOUT 200 FT AGL, THE PLANE ENTERED A 'DOWNDRAFT.' THE PIC SAID THE ACFT BEGAN A DSCNT WITH A HIGH SINK RATE. ALSO, HE SAID THE ENG RPM 'STARTED TO DECREASE' & THE ENG LOST POWER. THE PAX SAID THE ENG SOUNDED LIKE IT 'LOADED UP' DURING THE ENCOUNTER WITH THE DOWNDRAFT, BUT THAT IT CONTD RUNNING. THE PLT MANEUVERED THE ACFT TO THE RIGHT TO LAND IN AN ALFALFA FIELD. DURING THE LANDING, THE ACFT NOSED OVER & CAME TO REST INVERTED. A POST-ACDNT EXAM OF THE ENG PROVIDED NO EVIDENCE TO EXPLAIN THE RPRTD LOSS OF POWER.
Flight
Event TypeAccident
Event Time16:30 MDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftUniversal Stinson 108-1
Tail NumberN8607K
Aircraft CategoryAir
DamageSubstantial
OperatorVernon Hoppes
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsFranklin · 6A4-150-B3 · Reciprocating · 150
Seats4
People & Injuries
Injury Summary1 injury (1 minor injury), 1 uninjured
Fatal0
Serious0
Minor1
Uninjured1
Total2
Crew 1Age 55 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 15 kt, gusting 20 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO