As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ELECTRONIC CENTRALIZED AIRCRAFT MONITOR SHOCK ABSORBER FAULT ON TAKE OFF, GEAR WOULD NOT RETRACT. RETURNED TO JFK. AIRCRAFT DID NOT DECLARE EMERGENCY AND WAS NOT OVERWEIGHT FOR LANDING. NORMAL LANDING. PERFORMED LANDING GEAR CIU BUILT IN TEST EQUIPMENT TEST PER AMM 32-69-00. SYSTEM FAULTS (25GA) PROXIMITY SENSOR. SENSOR (25GA) WAS REMOVED AND REPLACED PER AMM 32-31-73. TARGET MEASUREMENTS ARE WITHIN LIMITS. GEAR SWING WAS DONE TO CONFIRM FAULTS CORRECTED.OPS CK GOOD. ALL INDICATION NML.