Event Details

Title:Runway overrun, Western Air Lines, Inc., Boeing 737-200, N4527W, Casper , Wyoming, March 31, 1975
Micro summary:Following a nonprecision approach, this Boeing 737 overran the runway.
Event Time:1975-03-31 at 0743 MDT
File Name:1975-03-31-US.pdf
Publishing Agency:National Transportation Safety Board (NTSB)
Publishing Country:USA
Report number:NTSB-AAR-75-15
Site of event:Landing, overrun RWY 25
Departure:Denver Stapleton International Airport, Denver, Colorado, USA
Destination:Natrona County International Airport, Casper, Wyoming, USA
Airplane Type(s):Boeing 737-200
Flight Phase:Landing
Operator(s):Western Air Lines
Type of flight:Revenue
Serious Injuries:4
Other Injuries:0
Executive Summary:A t 0743 on March 31, 1975, Western Air Lines, Inc., Flight 470, overran the departure end of runway 25 at the Natrona County International Airport, Casper, Wyoming. The landing was made following a nonprecision approach on a snow-covered runway, with a following wind, and during reduced visibility. The aircraft was damaged substantially.

Of the 99 persons aboard the aircraft , 4 were injured. Of these four injuries, three occurred during the evacuation.

The National Transportation Safety Board determines that the probable cause of the accident was the failure of the pilot-in-command to exercise good judgment when he failed to execute a missed approach and continued a nonprecision approach to a landing without adequately assessing the aircraft's position relative to the runway threshold. Contributing to the accident were the excessive height and speed at which he crossed the approach end of the runway and the failure of other flight crewmembers to provide him with required callouts.
Learning Keywords:Operations - Airspace - Non-Precision Approach
Operations - Crew Resource Management
Operations - Evacuation
Operations - Runway Overrun
Operations - Unstabilized Approach


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