As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER T/O GEAR HANDLE WOULD NOT RAISE ABOVE OFF POSITION. ABNORMAL PROCEDURE, LANDING GEAR LEVER WILL NOT GO UP PAST OFF. COMPLIED WITH RETURNED TO EWR FOR UNEVENTFUL LANDING. FOUND MAIN SAFETY SWITCH DIRTY AND CAKED WITH RESIDUE. CLEANED SAME, OPS CHECKED GOOD ON GROUND AT EWR IAW 727 M/M 32-09-121.