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Last updated: 7 December 2021
Date:Thursday 16 October 1969
Type:Silhouette image of generic DC86 model; specific model in this crash may look slightly different
McDonnell Douglas DC-8-63CF
Operator:Seaboard World Airlines
Registration: N8634
MSN: 46021/424
First flight: 1968
Total airframe hrs:3441
Engines: 4 Pratt & Whitney JT3D-7
Crew:Fatalities: 0 / Occupants: 5
Passengers:Fatalities: 0 / Occupants: 0
Total:Fatalities: 0 / Occupants: 5
Aircraft damage: Damaged beyond repair
Location:Stockton Airport, CA (SCK) (   United States of America)
Phase: Landing (LDG)
Departure airport:Oakland International Airport, CA (OAK/KOAK), United States of America
Destination airport:Oakland International Airport, CA (OAK/KOAK), United States of America
The DC-8 was being used for recurrent training and annual proficiency checks of first officers. The plane took off from Oakland to perform training manoeuvres in the Stockton area. During a touch and go at Stockton runway 29R the takeoff warning horn sounded and the ground spoiler light illuminated. The captain aborted the takeoff, but the aircraft overran the runway.

Probable Cause:

PROBABLE CAUSE: "A false ground spoiler position indication during the takeoff portion of a touch and go landing that induced the captain to discontinue the takeoff at a point too far down the runway to permit him to stop the aircraft on the runway."

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 years
Accident number: NTSB/AAR-70-24
Download report: Final report

Runway excursion

Follow-up / safety actions

NTSB issued 1 Safety Recommendation

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This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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