As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR - 4135 - AFTER DEPARTURE LANDING GEAR DID NOT RETRACT. QRH, TRY CYCLING GEAR. GEAR CYCLED DID NOT WORK. APPEARED NOSE GEAR RETRACTED BUT MAINS DID NOT. RETURNED TO EWR UNEVENTFUL. MAINTENANCE REMOVED AND REPLACED LGEU AND OPS CHECKED AIRCRAFT GOOD FOR SERVICE. (M)