As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 4383 - ON CLIMB-OUT, THE RIGHT ENGINE ANTI-ICE BLEED VALVE FAIL LIGHT ILLUMINATED. AIRCRAFT RETURNED TO BOS DUE TO WEATHER CONDITIONS. MAINTENANCE REPLACD THE RIGHT ANTI-ICE BLEED VALVE SYSTEM CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (M)