Incident Overview

Date: Tuesday 1 October 1974
Aircraft Type: Volpar Turboliner
Owner/operator: Winship Air Services
Registration Number: N357V
Location: Lupine Airstrip, AK – ÿ United States of America
Phase of Flight: Manoeuvring (airshow, firefighting, ag.ops.)
Status: Destroyed, written off
Casualties: Fatalities: 6 / Occupants: 6
Component Affected: Aircraft powerplant and controlsAircraft powerplant and controls
Category: Accident
A Volpar Turboliner aircraft crashed during a low pass over Lupine Airstrip in Alaska. The aircraft was operating at its maximum takeoff weight and landing weight, and was stalled, indicating a potential loss of lift. The pilot was operating in adverse weather conditions, including instrument conditions with low visibility and fog, which contributed to the incident. The airstrip was designed for VFR operations and was constructed to accommodate a pilot who failed to follow approved procedures and maintain proper flight speed.A Volpar Turboliner aircraft crashed during a low pass over Lupine Airstrip in Alaska. The aircraft was operating at its maximum takeoff weight and landing weight, and was stalled, indicating a potential loss of lift. The pilot was operating in adverse weather conditions, including instrument conditions with low visibility and fog, which contributed to the incident. The airstrip was designed for VFR operations and was constructed to accommodate a pilot who failed to follow approved procedures and maintain proper flight speed.

Description

The Volpar Turboliner crashed when it stalled during a low pass over the Lupine Airstrip in Alaska. The airstrip was VFR operations only and weather conditions at the accident time were instrument conditions with a visibility of 2 miles or less in fog. It was also established that the airplane was over its maximum takeoff weight and landing weight. The Lupine Airstrip was constructed to transport PROBABLE CAUSE(S) pilot in command – continued VFR flight into adverse weather conditions pilot in command – failed to obtain/maintain flying speed FACTOR(S) pilot in command – failed to follow approved procedures,directives,etc. pilot in command – improper operation of powerplant & powerplant controls miscellaneous acts,conditions – airframe ice weather – low ceiling weather – fog weather – snow weather – icing conditions-includes sleet,freezing rain,etc.

Primary Cause

Pilot in command failure to follow approved procedures and maintain flying speed due to adverse weather conditions.Pilot in command failure to follow approved procedures and maintain flying speed due to adverse weather conditions.

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