Aviation Accident Summaries

Aviation Accident Summary LAX91LA150

HILT, CA, USA

Aircraft #1

N584B

BEECH A35

Analysis

A SEALANT BY THE NAME OF 'FUELUBE' WAS SUBSTITUTED FOR A LUBRICANT FOR THE 'O' RINGS SEALS IN THE FUEL SELECTOR/MANUAL FUEL PUMP DURING MAINTENANCE. THE PILOT STATED THAT 10 OPERATIONAL HOURS AFTER THE APPLICATION OF 'FUELUBE' HE EXPERIENCED BINDING IN THE FUEL SELECTOR WHEN HE ATTEMPTED TO CHANGE TANKS AND THE HE WAS UNABLE TO FEEL THE DETENT POSITION. HE ATTEMPTED TO CHANGED FUEL TANK WHILE ON ACROSS COUNTRY FLIGHT AND THE ENGINE FAILED FROM FUEL STARVATION. HE EXECUTED A FORCED LANDING TO AN OPEN, ROCK STREWN, FIELD THAT IMPARTED SUBSTANTIAL DAMAGED TO THE AIRCRAFT DURING TOUCH DOWN.

Probable Cause and Findings

THE APPLICATION OF A SEALANT INSTEAD OF A LUBRICANT TO THE INTERNAL 'O' RINGS SEALS IN THE FUEL SELECTOR BY MAINTENANCE PERSONNEL. FACTORS CONTRIBUTING TO THE ACCIDENT WERE THE PILOT'S INABILITY TO SELECT A FUEL SOURCE AND FUEL STARVATION THAT RESULTED IN AN ENGINE FAILURE. ROUGH TERRAIN AT THE LANDING SITE WAS ALSO A FACTOR IN THE ACCIDENT.

 

Source: NTSB Aviation Accident Database

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