N436CA
CASA C-212-200
THE COMMUTER FLT WAS TAXIING TO THE GATE, WHEN THE PLT OBSERVED A FIRE WARNING LIGHT FOR THE NO 2 ENG. THE FIRE BOTTLE WAS DISCHARGED & THE FIRE WAS EXTINGUISHED. AN EXAM REVEALED THAT A FUEL LINE, P/N 3103385-1, HAD BROKEN AND HAD STARTED A FIRE. AN EXAM OF THE FUEL LINE REVEALED T00L MARKS ON THE LINE. A LABORATORY EXAM REVEALED THE LINE HAD FAILED DUE TO FATIGUE & THE FATIGUE HAD ORIGINATED IN THE AREA OF THE TOOL MARKS. THE TOOL MARKS SUGGESTED THAT A CRESCENT WRENCH OR SIMILAR TOOL HAD BEEN USED TO BEND THE LINE IN ORDER TO ALIGN THE LINE WITH THE ATTACH FITTING. THE COMPANY WAS ADVISED OF THE FINDINGS & A COMPANY DIRECTIVE WAS ISSUED TO DISCONTINUE THE PRACTICE.
Source: NTSB Aviation Accident Database
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