As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE EN ROUTE TO YQB, THE RIGHT AIR VALVE FAIL LIGHT ILLUMINATED. CREW REDUCED POWER TO BELOW 92 PERCENT N1 AND WARNING LIGHT EXTINGUISHED. AIRCRAFT RETURNED TO BOS AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND BROKEN PIN ON ANTI-ICE SHUTOFF VALVE CONNECTOR. CONNECTOR WAS REPLACED AND SYSTEM TESTED GOOD. (M)