As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SJU - FLT 0105 - AFTER TAKEOFF FROM BOS LANDING GEAR WOULD NOT RETRACT WHILE IN HYDRAULIC SYSTEM 2. SWITCHED TO HYDRAULIC SYSTEM 1 AND GEAR RETRACTED SUCCESSFULLY. LANDING SJU WITHOUT INCIDENT. REPLACED PROXIMITY UNIT AND CLEANED PROXIMITY TARGETS. SYSTEM GROUND CHECKS NORMAL OPERATION. (W)