B737-800
Flight Crew Air Transport Pilot (ATP)
Confusion; Situational Awareness; Workload
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Weight And Balance; Ground Event / Encounter Other / Unknown
Flight Crew Took Evasive Action; General Maintenance Action
Aircraft; Weather
During taxi in at ORD; we were making a turn on taxiway Golf. Rain was light to moderate. Aircraft speed was less than five knots groundspeed. Tiller was turned to the left and the aircraft continued straight ahead. It felt like the nose wheel was skipping off the ground and was fully extended. Suspect was an aft CG. The aircraft almost did the same thing during subsequent turns. We reduced taxi speed even further. During the event the aircraft was stopped on the edge of the taxiway and did not strike any ground objects. We inspected the aircraft at the gate with maintenance tech and no damage was found or noted. The maintenance tech stated that the nose wheel strut was extended further than normal.Suspected Aft CG and aircraft loading combined with rain intensity.
During taxi after landing at ORD; a B737-800 nosewheel became light and began skipping on a wet surface with an apparent aft loaded aircraft.