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NTSB Report
September 13, 1992 · Cessna 170A · N9577A
Lopez, WA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 13, 1992
Injury Outcomes
4 injuries (4 fatalities)
Location
Lopez, WA
Aircraft
Cessna 170A
Tail Number
N9577A
Operator
Konecki John T
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
SEA92FA197
AT THE TIME THE CESSNA 170 ARRIVED OVER THE DESTINATION AIRPORT, THE WINDS WERE REPORTED TO BE STRONG, GUSTY, AND MULTIDIRECTIONAL. A NUMBER OF WITNESSES REPORTED HEARING THE AIRCRAFT ENGINE OVERHEAD, FOLLOWED SHORTLY THEREAFTER BY THE SOUND OF THE IMPACT WITH THE TERRAIN. THE AIRCRAFT WAS FOUND TO HAVE IMPACTED THE TERRAIN IN A NEAR VERTICAL ATTITUDE, WITH IMPACT AND CRUSH ANGLES SHOWING THE AIRFRAME HAD A ROTATIONAL MOMENT TO THE LEFT AT THE TIME OF IMPACT.
NTSB Probable Cause
THE PILOT'S INADVERTENT STALL/SPIN. FACTORS INCLUDE GUSTY, UNFAVORABLE, HIGH VELOCITY WINDS, AND TURBULENCE.
Full Narrative
AT THE TIME THE CESSNA 170 ARRIVED OVER THE DESTINATION AIRPORT, THE WINDS WERE REPORTED TO BE STRONG, GUSTY, AND MULTIDIRECTIONAL. A NUMBER OF WITNESSES REPORTED HEARING THE AIRCRAFT ENGINE OVERHEAD, FOLLOWED SHORTLY THEREAFTER BY THE SOUND OF THE IMPACT WITH THE TERRAIN. THE AIRCRAFT WAS FOUND TO HAVE IMPACTED THE TERRAIN IN A NEAR VERTICAL ATTITUDE, WITH IMPACT AND CRUSH ANGLES SHOWING THE AIRFRAME HAD A ROTATIONAL MOMENT TO THE LEFT AT THE TIME OF IMPACT.
Flight
Event TypeAccident
Event Time19:10 PDT
Nearest AirportLopez Airport (1nm NE)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 170A
Tail NumberN9577A
Aircraft CategoryAir
DamageDestroyed
OperatorKonecki John T
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · C-145-2 · Reciprocating · 145
Seats4
People & Injuries
Injury Summary4 injuries (4 fatalities)
Fatal4
Serious0
Minor0
Uninjured0
Total4
Crew 1Age 42 · Second Class
Conditions
ConditionsVMC
LightDusk
Wind230° @ 25 kt, gusting 35 kt
Visibility20 sm
CeilingBroken clouds 4000 ft
Temperature / Dew Point55 / 0 C
Altimeter0
Weather SourceWIT