As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER TAKEOFF, NR 1 ENGINE FIRE WARNING B-LOOP INDICATED FIRE. A-LOOP WAS INTERMITTENT CAUSING FIRE WARNING NR 1 ENGINE SHUT DOWN. MEGGED LOOPS A AND B FROM FIRE WARNING CONTROL MODULE CHECKS GOOD. CHECKED WIRING AND LOOPS ON ENGINE, CHECKED GOOD. REMOVED AND REPLACED FAULTY A13 CARD PER MAINTENANCE MANUAL 26-11-00 PAGE 201.