As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) TAXI LIGHT CIRCUIT BREAKER KEPT TRIPPING. FOUND WRONG PART INSTALLED FROM MFG, CIRCUIT BREAKER FOUND INSTALLED ON TAXI LIGHT SWITCH AND STALL WARNING HEAT SWITCH. SHOULD HAVE BEEN A 7270-5-15, 15 AMP. FLEET CHECKED, NO OTHER AIRCRAFT HAVE WRONG BREAKERS INSTALLED. AFFECTED ACFT HAD A HISTORY OF 3 PREVIOUS CIRCUIT BREAKER TRIPPING IN THE PAST, RESETS WERE SUCCESSFUL.