As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH INTO PHX EN ROUTE FROM BUR AFTER LANDING GEAR EXTENSION THERE WAS NO LANDING GEAR DOWN AND LOCKED OR UNSAFE GEAR INDICATIONS, ABORTED APPROACH. FOUND CIRCUIT BREAKER (SECT5) EXTENDED, AFTER DISCUSSION WITH MAINTENANCE CONTROL, CIRCUIT BREAKER WAS RESET AND SYSTEM WAS RESTORED, LANDED WITHOUT FURTHER EVENT. MAINTENANCE JACKED THE AIRCRAFT AND RETRACTED THE LANDING GEAR 3 TIMES; ALL INDICATIONS WERE NORMAL, COULD NOT DUPLICATE PROBLEM.