Incident · 1991-08-22

NTSB case SEA91IA219 · BOEING 747-151 · Part 121

What the record says

Event date: 1991-08-22
Event type: Incident
Highest injury level: Minor injury
Aircraft: BOEING 747-151 (N604US)
Operating rule: Part 121
Operator: NORTHWEST AIRLINES INC Operator named in NTSB report
Operated by (per NTSB report): NORTHWEST AIRLINES, INC

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.

Source: NTSB case SEA91IA219

Flight crew

Flight-crew details for this event aren't in the NTSB database extract we hold (its coverage starts with 2008 events) — a gap in our data, not an absence of crew.

Facts as the NTSB records them — GroundCheck adds no judgement. Preliminary records may be revised as the investigation proceeds.

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