As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHEN GROUND POWER SELECTED ON CIRCUIT BREAKER, NR 5B FOR BLEED CONTROL TRIPPED. INVESTIGATION FOUND THE CROSS-OVER CANNON PLUG 9811-P55 BELOW THE CENTER FLOOR ADJACENT TO LAVATORY CORRODED. PLUG REPLACED AND WIRE NR 2121-2G22 REPLACED. PART TC: 23,552.