What was found
(CAN) AN OPERATOR OF Q400 ACFT HAS REPORTED THAT STBY COMPASS CABLE CAUSED SMALL FIRE IN THE COCKPIT. SUBSEQUENT INVESTIGATION FOUND THAT THE INSULATION OF THE LEAD ASSEMBLY EXHIBITED INSUFFICIENT RESISTANCE. IAW VENDOR SB THE SAME COMPONENT, CABLE CE2-A26, IS USED IN MAGNETIC STANDBY COMPASS PN WL 1001KCA1 ON GLOBAL PROGRAM. PARTS MANUFACTURED IN 2011 & PRIOR JAN 1, 2013 ARE AFFECTED. REF TO EASA AD PAD 15-035.