As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOV - ON DESCENT INTO DOV, GOT APU FIRE INDICATION (APU NOT RUNNING). COMPLETED EMERGENCY ITEMS AFTER APU FIRE TEST WOULD NOT TEST. PULLED B-LOOP CIRCUIT BREAKER. LIGHT WENT OUT. A-LOOP FIRE TEST OK (SUSPECT FALSE FIRE INDICATION). CHECKED BOTH APU, 'A' AND 'B' LOOP RESISTANCE. FOUND NORMAL. FOUND A-12 CARD CONNECTOR LOOSE. CLEANED AND RESECURED CONNECTOR. APU FIRE DETECTOR SYSTEM CHECKED NORMAL IAW MM. (X)