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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

November 28, 1992 · Taylorcraft BC-12D · N69MA

Huslia, AK

Overview

Report Status
Probable Cause
Event Type
Accident
Date
November 28, 1992
Injury Outcomes
1 injury (1 minor injury), 1 uninjured
Location
Huslia, AK
Aircraft
Taylorcraft BC-12D
Tail Number
N69MA
Operator
Ernst Donald E
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
ANC93LA017

THE PILOT EXECUTED A NORMAL TOUCH AND GO IN BRIGHT DAYLIGHT AT A SNOW COVERED AIRPORT, FOLLOWED BY THE DOWNWIND LEG DIRECTLY INTO THE BRIGHT SETTING ARTIC SUN. AT THE TIME THE AIRPLANE TURNED TO FINAL APPROACH, THE PILOT TURNED AWAY FROM THE SUN, SUNSET OCCURRED AND THE SHADOW OF CIVIL TWILIGHT PASSED ACROSS THE THRESHOLD OF THE LANDING RUNWAY. THE AIRCRAFT DESCENDED INTO THE SHADOW, REDUCING THE VISUAL CUES SUFFICEINT FOR DEPTH PERCEPTION. THE PILOT COULD NOT ACCOUNT FOR THE UNDERSHOOT BUT BELIEVED 'IT MUST HAVE BEEN A WINDSHEAR.' THE WEATHER WAS CLEAR, VISIBILITY UNLIMITED, A STEADY HEADWIND OF 8 TO 10 KNOTS, AND TEMPERATURE AT MINUS 11 DEGREES (F).

NTSB Probable Cause

THE FAILURE OF THE PILOT TO MAINTAIN PROPER GLIDEPATH DUE TO LOSS OF VISUAL CUES OVER SNOW COVERED TERRAIN IN SHADOW OF SETTING SUN. FACTORS RELATING TO THE ACCIDENT WERE THE REDUCED LIGHT OF DUSK AND THE REDUCTION OF VISUAL PERCEPTION OF THE PILOT IN CIVIL TWILIGHT.

Full Narrative

THE PILOT EXECUTED A NORMAL TOUCH AND GO IN BRIGHT DAYLIGHT AT A SNOW COVERED AIRPORT, FOLLOWED BY THE DOWNWIND LEG DIRECTLY INTO THE BRIGHT SETTING ARTIC SUN. AT THE TIME THE AIRPLANE TURNED TO FINAL APPROACH, THE PILOT TURNED AWAY FROM THE SUN, SUNSET OCCURRED AND THE SHADOW OF CIVIL TWILIGHT PASSED ACROSS THE THRESHOLD OF THE LANDING RUNWAY. THE AIRCRAFT DESCENDED INTO THE SHADOW, REDUCING THE VISUAL CUES SUFFICEINT FOR DEPTH PERCEPTION. THE PILOT COULD NOT ACCOUNT FOR THE UNDERSHOOT BUT BELIEVED 'IT MUST HAVE BEEN A WINDSHEAR.' THE WEATHER WAS CLEAR, VISIBILITY UNLIMITED, A STEADY HEADWIND OF 8 TO 10 KNOTS, AND TEMPERATURE AT MINUS 11 DEGREES (F).

Flight

Event TypeAccident
Event Time10:30 AKST
Nearest AirportHUSLIA (1nm SSW)
Runway3
Runway Length3000 ft
Runway Width60 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftTaylorcraft BC-12D
Tail NumberN69MA
Aircraft CategoryAir
DamageSubstantial
OperatorErnst Donald E
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · C85-12F · Reciprocating · 85
Seats2

People & Injuries

Injury Summary1 injury (1 minor injury), 1 uninjured
Fatal0
Serious0
Minor1
Uninjured1
Total2
Crew 1Age 42 · Third Class

Conditions

ConditionsVMC
LightDusk
Wind360° @ 10 kt
CeilingNone
Temperature / Dew Point-11 C / 0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data