What was found
AFT TAKEOFF, WHEN LG CYCLED UP, WE RECEIVED NOSE DOOR OPEN, GEAR DISAGREE WARNING MSG. DASHED IN LT & RT GEAR & ON INDICATION IN CTR, ALSO RECEIVED STEERING INOPERATIVE. WOW INPUT & WOW INPUT FAILED CAUTION MSG. RAN QRH, WARNING MSG WENT AWAY, WOW INPUT REMAINED. RETURNED, NOT OVERNIGHT LANDING. DEFERRED ACFT LG IAW MEL 33-30-01. GEAR PINS INSTALLED. ALL PROCEDURES COMPLIED WITH. ENTERED INTO MM02, PLACARDED PER MEL. R & R NLG ASSEMBLY IAW JC 200-32-21-01, PN OFF & ON 16735-109, SN OFF 07MPT117, SN ON DCL1029/04. INSTALLED NEW RT RVDT PN 16735-109, SN 5138. RIGGED NOSE WHEEL STEERING. OPERATIONS CHECKED GOOD IAW MM 409 535975 & CONT CARDS FOR DETAILS. MM02 UPDATED & PLACARD REMOVED.