What was found
SJU - LANDING GEAR FAILED TO RETRACT AFTER TAKEOFF. BOTH SYSTEMS ATTEMPTED. RETURNED TO SJU AND LANDED WITHOUT INCIDENT. REPLACED PROXIMITY DETECTOR PROCESSING UNIT. SYSTEM GROUND CHECKED NORMAL OPERATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SJU - LANDING GEAR FAILED TO RETRACT AFTER TAKEOFF. BOTH SYSTEMS ATTEMPTED. RETURNED TO SJU AND LANDED WITHOUT INCIDENT. REPLACED PROXIMITY DETECTOR PROCESSING UNIT. SYSTEM GROUND CHECKED NORMAL OPERATION.