As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN CLIMB OUT FROM LZU THE RT EMERGENCY AIR CB POPPED, THE LIGHT CAME ON & THE EMERGENCY AIR CAME ON. THE PILOTS TRIED TO RESET THE CB WITH NO LUCK SO THEY TURNED AROUND & CAME BACK TO LZU. AFTER INSPECTION IT WAS FOUND THAT THE RT 3 WAY EMERGENCY VLV HAD A DIRECT SHORT IN THE COIL & WAS THE REASON FOR THE CB POP & EMERGENCY AIR COMING ON.