As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BGR - FLT 4828 - ON FLIGHT 4828 - BOS-PQI, LEFT ENGINE ANTI-ICE AIR VALVE LIGHT ILLUMINATED WHEN SWITCH WAS SELECTED ON. CREW FOLLOWED THEIR CHECKLIST AND DIVERTED INTO BGR AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT ENGINE ANTI-ICE START BLEED VALVE, PERFORMED REQUIRED CHECKS AND RETURNED THE AIRCRAFT TO SERVICE. (M)