As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1677 FLL-KIN RETURNED TO FLL DUE TO BLEED 1 LEAK AT ALTITUDE- COMPLIED WITH QRH MESSAGE EXTINGUISHED. PERFORMED FIM TASK 36-11-00-810-836-A. 36-21-00-810-803-A AND 36-21-00-810-801-A. FOUND LOOPS A&B AT FAULT. REMOVED AND REPLACED LOOPS A&B IAW AMM 36-21-02. ALL CHECKS GOOD.