As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON PUSHBACK, NOTICED BLEED AIR VALVE LT CB POPPED P64 A7. ACFT GROUNDED. CONFIRMED FAULT WITH CIRCUIT BREAKER. RESET BREAKER IAW AMM 20-60-01-860-801. R & R NR 1 BLEED AIR REGULATOR IAW AMM 36-11-03-000-801 AND 36-11-03-400-801. LEAK AND OPS CHECK PERFORMED, OK FOR SERVICE.