As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOST BRAKES DURING TAXI. FOUND NR 1 S/B HYD PUMP CIRCUIT BREAKER OUT. INSPECTED AND FOUND CONNECTOR PLUG CONTAMINATED WITH OIL FROM ENGINE BREATHER. CLEANED AND RESEATED CONNECTOR PLUG. RESET CIRCUIT BREAKER AND GROUND RAN AIRCRAFT. NR 1 HYD PRESSURE NORMAL. OK FOR SERVICE.