Incident Overview

Date: Wednesday 10 July 1957
Aircraft Type: Lockheed 18-56-23 Lodestar
Owner/operator: private
Registration Number: N45378
Location: King Salmon Airport, AK (AKN) – ÿ United States of America
Phase of Flight: Initial climb
Status: Destroyed, written off
Casualties: Fatalities: 6 / Occupants: 6
Component Affected: Elevator trim tabElevator trim tab
Investigating Agency: CABCAB
Category: Accident
A Lodestar pilot initiated a taxi and takeoff sequence following an engine rump on the parking ramp. The King Salmon tower cleared the aircraft to runway 11, providing wind and altimeter data. The aircraft landed on runway 11, pausing for approximately one to two minutes, with propellers running through multiple times. The climb was initially smooth, increasing in elevation to 75-100 feet, then rapidly steepening, culminating in near vertical ascent. A fuel-fed fire erupted during the climb, followed by a sudden pivot and subsequent ground impact. The probable cause is the pilots action in taking off with the elevator trim tab positioned for landing.A Lodestar pilot initiated a taxi and takeoff sequence following an engine rump on the parking ramp. The King Salmon tower cleared the aircraft to runway 11, providing wind and altimeter data. The aircraft landed on runway 11, pausing for approximately one to two minutes, with propellers running through multiple times. The climb was initially smooth, increasing in elevation to 75-100 feet, then rapidly steepening, culminating in near vertical ascent. A fuel-fed fire erupted during the climb, followed by a sudden pivot and subsequent ground impact. The probable cause is the pilots action in taking off with the elevator trim tab positioned for landing.

Description

At 06:38, following a period of engine rump on the parking ramp, the Lodestar pilot called the King Salmon tower for taxi and takeoff information. The duty controller cleared it to runway 11 and furnished the latest wind and altimeter conditions: Wind east-northeast 8; altimeter 29.90. N45378 was cleared directly onto runway 11 where several persons saw it pause one to two minutes and heard its propellers run through one or two times. The takeoff was started at 06:42 and the aircraft took off and climbed to between 75 and 100 feet. The landing gear remained extended during that climb. The climb continued normally although somewhat steeper to between 150 and 200 feet, at which time the climb of the aircraft steepened rapidly but smoothly until it was nearly vertical. At the peak of the climb the aircraft pivoted counterclockwise, plunged to the ground, and exploded. An intense fuel-fed fire followed. PROBABLE CAUSE: “The Board determines that the probable cause of this accident was the pilots action in taking off with the elevator trim tab positioned for landing.”

Primary Cause

Pilot action ? elevator trim tab position for landingPilot action ? elevator trim tab position for landing

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