As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 6394 - AFTER DEPARTURE FROM BOS, THE CREW GOT A RIGHT AIR VALVE LIGHT. CREW DIVERTED BACK TO BOS AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED SYSTEM AND FOUND A BROKEN WIRE AT THE AIRFRAME CANNON PLUG. REPAIRED THE WIRE AND THE SYSTEM OPS CHECKED GOOD. AIRCRAFT WAS RETURNED TO SERVICE. (M)