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N604US accident description

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Crash location Unknown
Nearest city Seattle, WA
47.606209°N, 122.332071°W
Tail number N604US
Accident date 22 Aug 1991
Aircraft type Boeing 747-151
Additional details: None

NTSB Probable Cause

A FIRE IN THE NUMBER 4 ENGINE, RESULTING FROM A FUEL LEAK AT THE MAIN FUEL CONTROL UNIT, DUE TO IMPROPER MAINTENANCE BY UNKNOWN/UNDETERMINED PERSON. THE L5 EMERGENCY EXIT FAILED TO OPERATEE DUE TO A BROKEN PLASTIC PULLEY GUARD IN THE SLIDE RELEASE MECHANISM.

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