Incident Overview
Date: Thursday 21 March 1968
Aircraft Type: Boeing 727-22C
Owner/operator: United Airlines
Registration Number: N7425U
Location: Chicago-O’Hare International Airport, IL (ORD) –
ÿ United States of America
Phase of Flight: Take off
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants: 3
Component Affected: Aircraft control system (stickshaker)Aircraft control system (stickshaker)
Investigating Agency: NTSBNTSB
Category: Accident
A 727 aircraft experienced a near-miss takeoff due to a crew error ? failure to abort a warning of an unsafe takeoff condition. The aircraft continued the takeoff, but lost climb capability, resulting in a controlled landing back on the macadam shoulder. The flaps were set at 2 degrees instead of the required takeoff range.A 727 aircraft experienced a near-miss takeoff due to a crew error ? failure to abort a warning of an unsafe takeoff condition. The aircraft continued the takeoff, but lost climb capability, resulting in a controlled landing back on the macadam shoulder. The flaps were set at 2 degrees instead of the required takeoff range.
Description
The takeoff warning horn sounded shortly after commencing takeoff from runway 09R. The takeoff was continued as the crew tried to figure out what caused the warning. The horn ceased prior to reaching rotate speed. The stickshaker came on and thrust was added, but the aircraft failed to climb and the captain elected to discontinue the takeoff. The 727 settled back to the macadam shoulder off the right side of the runway and struck a ditch, coming to rest 1100 feet beyond the runway end and 300 feet right of the extended centreline. The flaps had been set at 2deg instead of takeoff range of 5-25 degrees. PROBABLE CAUSE: “The failure of the crew to abort the takeoff after being warned of an unsafe takeoff condition.”
Primary Cause
Crew error ? failure to abort the takeoff after being warned of an unsafe takeoff condition.Crew error ? failure to abort the takeoff after being warned of an unsafe takeoff condition.Share on:
