As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 4909 - BOS-BUF - DURING CLIMB-OUT, THE LEFT PROP DE-ICE FAILED. DUE TO EXISTING WEATHER CONDITIONS THE AIRCRAFT RETURNED TO BOS AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED A CHAFED DE-ICE LEAD AND PERFORMED OPS CHECK OF THE SYSTEM. NO FAULT WAS FOUND. AIRCRAFT RETURNED TO SERVICE. (M)