As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 4432 - DURING APPROACH TO BOS, THE LANDING GEAR DID NOT EXTEND WHEN SELECTED DOWN. CREW FOLLOWED PROCEDURES AND EXTENDED THE GEAR USING EMERGENCY PROCEDURES. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LANDING GEAR CONTROL BOX. SYSTEM TESTED GOOD. AIRCRAFT WAS RETURNED TO SERVICE. (M)