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Accident Report Detail

Boeing 747, N732PA

Executive Summary

N732PA was being operated on December 13, by the Boeing Company, Seattle , Washington for the purpose of ferrying the aircraft from Boeing Field, Seattle, Washington, to the Renton Airport. During an approach to a landing at Renton, the aircraft struck an embankment approximately 20 feet short of the threshold of runway 15. The ground contact point was approximately 30 inches below the top of the bank and the runway level. The aircraft came to a stop on the centerline of Runway 15, approximately 3,500 feet beyond the threshold. The incident occurred at 1111 P.S.t. on December 13, 1969. Eleven persons were on board, including the crew. None was injured. Small fires broke out in the No. 3 engine wing strut and the No. 4 engine foward of the tail cone. These were immediately extinguished. Structural damage was confined to the right wing landing gear, right flap assemblies, and the Nos. 3 and 4 engines and their cowlings.

The significant weather reported at 1112 for the Renton Airport was scattered clouds at 4,500 feet and broken clouds at 6,500 feet . The visibility was 13 miles and the wind velocity was 20 knots from 120° true.

Probable Cause

The Board determines that the probable cause of this incident was the premature touchdown of the aircraft during a visual approach to a relatively short runway, induced by the pilot's not establishing a glidepath which would assure runway threshold passage with an adequate safety under somewhat unusual environmental and psychological conditions.

Accident Location: Renton , WA    
Accident Date: 12/13/1969
Accident ID: SEA70I0024

Date Adopted: 9/9/1970
NTSB Number: AAR-70-19
NTIS Number: PB-195193

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