As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FIRE LOOP "B" GIVES FIRE INDICATION. APU FIRE HANDLE LIGHT ON. RESEQUENCED FIRE HANDLE WITH C/B PERFORMED WI CHECK FROM CARD FILE J5 AND J3 TO APU FIRE LOOPS BOTH REATS SAME REINSTALL J5 AND J3 CONNECTORS OP'S CHECKED OK PER 26-15-00/501.