HOT SPRINGS, AR, USA
N503SS
SWEARINGEN SA226TC
TURNING ONTO THE RWY THE COPLT OBSERVED A FLASH BEHIND HIS INST PANEL. HE THEN RECEIVED AN ELECT SHOCK TO HIS RIGHT ARM FROM THE RIGHT CONSOLE. A FIRE THEN ERUPTED AT THE LOWER RIGHT HAND CORNER OF HIS INST PANEL. THE CREW & PAX EVACUATED THE ACFT. THE INTERIOR OF THE ACFT WAS CONSUMED BY FIRE AS WELL AS MOST OF THE UPPER HALF OF THE FUSELAGE. EXAM OF THE RIGHT SIDE WIRE BUNDLE REVEALED NUMEROUS INDICATIONS OF ARCING BETWEEN WIRES & FROM WIRES TO GROUND. ONE WIRE WAS ARCED AT A POINT IN LINE WITH A PLASTIC OXYGEN LINE. THERE WAS ALSO AN OILY RESIDUE INSIDE THE WIRE BUNDLE. A SMALL SECTION OFTHE RIGHT BRAKE PRESSURE LINE EXHIBITED SIGNS OF ELECT ARCING. THE HYDRAULIC SYST PRESS GAGE COPPER LINE ALSO SHOWED SIGNS OF ARCING. THE PLASTIC OXYGEN LINES FROM THE THE COCKPIT SIDE OF THE FORWARD PRESSURE BULKHEAD TO THE COCKPIT OUTLETS HAD BEEN CONSUMED BY FIRE & THE OXYGEN SUPPLY WAS DEPLEATED.
Source: NTSB Aviation Accident Database
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