was a crack in the fuel system fuel flow distribution manifold which resulted from an inadequate design by the manufacturer.
— NTSB Determination
DURING THE INITIAL CLIMBOUT THE FLIGHT ATTENDANT OBSERVED THE TAILCONE OF THE AIRPLANE'S NUMBER FOUR ENGINE GLOWING. AS THE POWER WAS REDUCED THE GLOW CEASED. THE AIRPLANE RETURNED TO THE DEPARTURE AIRPORT. THE ENGINE WAS INSPECTED AND ITS FUEL MANIFOLD WAS FOUND CRACKED AT THE SCALLOP RADIUS. THE MANUFACTURER MODIFIED THE FUEL MANIFOLD SO THAT ITS WALL WOULD BE THICKER AT THE RADIUS. THE MODIFIED MANIFOLD WAS NOT INSTALLED ON THE INCIDENT AIRPLANE.
DURING THE INITIAL CLIMBOUT THE FLIGHT ATTENDANT OBSERVED THE TAILCONE OF THE AIRPLANE'S NUMBER FOUR ENGINE GLOWING. AS THE POWER WAS REDUCED THE GLOW CEASED. THE AIRPLANE RETURNED TO THE DEPARTURE AIRPORT. THE ENGINE WAS INSPECTED AND ITS FUEL MANIFOLD WAS FOUND CRACKED AT THE SCALLOP RADIUS. THE MANUFACTURER…
The accident on 1993-07-21 involved a British Aerospace 146-300A, registration N611AW, operated by Air Wisconsin, Inc., at Chicago, IL.
was a crack in the fuel system fuel flow distribution manifold which resulted from an inadequate design by the manufacturer.
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