As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 3197 - EN ROUTE FROM DTW TO TVC, THE NAV LIGHT CIRCUIT BREAKER TRIPPED. THE CREW RESET THE CB BUT IT TRIPPED AGAIN. THE AIRCRAFT RETURNED TO DTW WITHOUT INCIDENT. MAINTENANCE PERSONNEL REPAIRED A SHORTED CONNECTION AT THE NAV LIGHT ASSEMBLY. ALL SYSTEMS OPERATED SATISFACTORILY. (M)