What was found
AFTER T/O, RETRACTED GEAR, NOSE WHEEL INDICATION WENT RED. GEAR WAS NOT UP. CYCLED GEAR WITH SAME RESULTS. THEN RETURNED TO SUBIC, GEAR SHOWED UNSAFE ON BOTH PRIMARY AND SECONDARY INDICATIONS. *S/D* REMOVED AND REPLACED NOSE LAND GEAR UNLOCK CYLINDER AND STEERING MANIFOLD PER IAW MM 32-35-06-4, 32-35-05-4.