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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

June 3, 1990 · Cessna 170A · N3944V

Dillon, CO

Overview

Report Status
Probable Cause
Event Type
Accident
Date
June 3, 1990
Injury Outcomes
1 injury (1 fatality)
Location
Dillon, CO
Aircraft
Cessna 170A
Tail Number
N3944V
Injuries
Fatal
Aircraft Damage
Substantial
NTSB Number
DEN90FA120

THE PLT DEPD FM ALASKA SVRL DAYS BEFORE THE ACDNT & WAS EN ROUTE TO CANTON, OHIO. ON THE DAY OF THE ACDNT, HE TOOK OFF FROM MOAB, UTAH & WAS FLWG INTERSTATE 70 (A MAJOR HWY). THERE WERE WITNESSES NR THE EISENHOWER TUNNEL (EVEL 11,145 FT) AT THE CONTINENTAL DIVIDE IN COLORADO. THEY SAW AN ACFT THAT MATCHED THE DESCRIPTION OF N3944V. THEY RPRTD THE ACFT WAS EASTBOUND AT LOW ALT AS IT PASSED THE WEST ENTRANCE, THEN IT BEGAN CLIMBING. BEFORE REACHING THE DIVIDE, THE ACFT TURNEDABRUPTLY NORTH & WAS LAST SEEN FLYING UP A VALLEY. SUBSEQUENTLY, IT CRASHED ON A SNOW FIELD IN A BOWL AREA, SURROUNDED ON THE WEST, NORTH & EAST BY PEAKS & RIDGES. TERRAIN AROUND THE ACDNT SITE ROSE UPWARD TO 13,000 FT. THERE WAS EVIDENCE THE ACFT HAD IMPACTED IN A STEEP NOSE DOWN ATTITUDE. DURING IMPACT, THE LEADING EDGES OF THE WINGS WERE CRUSHED & THE EMPENNAGE HAD BROKEN ABOUT 4 FT AFT OF THE WINGS & HAD FOLDED AFT & RIGHT. THERE WAS EVIDENCE THE PLT HAD SURVIVED THE IMPACT, BUT DIED FROM COMPLICATIONS OF HYPOTHERMIA. HIS STUDENT PLT/MED CERT HAD BEEN ISSUED ON 4/24/86.

NTSB Probable Cause

IMPROPER PLANNING/DECISION BY THE PILOT, AND HIS FAILURE TO MAINTAIN AIRSPEED, WHICH RESULTED IN AN INADVERTENT STALL. FACTORS RELATED TO THE ACCIDENT WERE: THE HIGH DENSITY ALTITUDE AND TERRAIN CONDITIONS.

Full Narrative

THE PLT DEPD FM ALASKA SVRL DAYS BEFORE THE ACDNT & WAS EN ROUTE TO CANTON, OHIO. ON THE DAY OF THE ACDNT, HE TOOK OFF FROM MOAB, UTAH & WAS FLWG INTERSTATE 70 (A MAJOR HWY). THERE WERE WITNESSES NR THE EISENHOWER TUNNEL (EVEL 11,145 FT) AT THE CONTINENTAL DIVIDE IN COLORADO. THEY SAW AN ACFT THAT MATCHED THE DESCRIPTION OF N3944V. THEY RPRTD THE ACFT WAS EASTBOUND AT LOW ALT AS IT PASSED THE WEST ENTRANCE, THEN IT BEGAN CLIMBING. BEFORE REACHING THE DIVIDE, THE ACFT TURNEDABRUPTLY NORTH & WAS LAST SEEN FLYING UP A VALLEY. SUBSEQUENTLY, IT CRASHED ON A SNOW FIELD IN A BOWL AREA, SURROUNDED ON THE WEST, NORTH & EAST BY PEAKS & RIDGES. TERRAIN AROUND THE ACDNT SITE ROSE UPWARD TO 13,000 FT. THERE WAS EVIDENCE THE ACFT HAD IMPACTED IN A STEEP NOSE DOWN ATTITUDE. DURING IMPACT, THE LEADING EDGES OF THE WINGS WERE CRUSHED & THE EMPENNAGE HAD BROKEN ABOUT 4 FT AFT OF THE WINGS & HAD FOLDED AFT & RIGHT. THERE WAS EVIDENCE THE PLT HAD SURVIVED THE IMPACT, BUT DIED FROM COMPLICATIONS OF HYPOTHERMIA. HIS STUDENT PLT/MED CERT HAD BEEN ISSUED ON 4/24/86.

Flight

Event TypeAccident
Event Time20:15 MDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 170A
Tail NumberN3944V
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-300 · Reciprocating · 165
Seats4

People & Injuries

Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 39 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind200° @ 20 kt
Visibility50 sm
CeilingNone
Temperature / Dew Point39 C / 0 C
Altimeter0
Weather SourceWIT

Appendix: Source Data