As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS FLIGHT RETURNED TO NHL ON ACCOUNT OF NUMBER ONE ENGINE THRUST REVERSER CIRCUIT BREAKER POPPED. AN EMERGENCY WAS DECLAIRED AND THE FLIGHT LANDED OVERWEIGHT WITHOUT INCIDENT. MAINTENANCE RESET C/B FOR #1 ENGINE THRUST REVERSER. PERFORMED OPERATIONAL TEST OF THE #1 ENGINE THRUST REVERSER IAW AMM 78-31-00. OPS CHECKED OK, NO FAULT NOTED.