As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MKE - FLT 1091.1 - AFTER FLIGHT CREW TOOK OFF, THEY NOTICED THE D.C. AMMETER STAYED AT ABOUT 60 AMPS. THEY DECIDED TO TURN BACK TO MKE TO HAVE MAINTENANCE CHECK IT. MAINTENANCE DETERMINED IT WAS A STICKING GAUGE MOVEMENT. VOLT/AMMETER WAS REPLACED. (X)