What was found
PREFLIGHT, CREW REPORTED AVIONICS MASTER SWITCH INOPERATIVE. MX REMOVED AND REPLACED CIRCUIT BREAKER SWITCH. SYS CHECKS OK. ACFT RELEASED BACK TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PREFLIGHT, CREW REPORTED AVIONICS MASTER SWITCH INOPERATIVE. MX REMOVED AND REPLACED CIRCUIT BREAKER SWITCH. SYS CHECKS OK. ACFT RELEASED BACK TO SERVICE.