AN A320 FLC RECEIVED AN ENG INDICATION AND CREW ALERTING SYS MESSAGE THAT THE LNDG GEAR WAS MALFUNCTIONING. THE NOSEWHEEL WAS COCKED 90 DEGS TO THE L; BUT A SAFE LNDG AND ACFT EVAC WAS MADE.

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ON APCH TO CMH IN AN A320; CONFIGURING ACFT FOR LNDG; WE LOWERED THE GEAR FOR LNDG. AFTER WHICH A 'LNDG GEAR CTL INDICATION UNIT #1 COMPUTER FAULT' APPEARED. SHORTLY AFTER 'LNDG GEAR CTL INDICATION UNIT #2' MESSAGE APPEARED. WE CONTACTED FLT OPS MAINT; DISCUSSED THE PROB; BUT COULD NOT SOLVE IT. THEREFORE; WE HAD TO LAND NOTING THAT WE WOULD NOT HAVE NOSEWHEEL STEERING; NOR THRUST REVERSERS. WE MADE A VISUAL APCH AS WE GOT CLOSER. I ASKED FOR A VISUAL CHK FROM THE TWR. THEY SAID THAT OUR NOSEWHEEL APPEARED TO BE AT AN ANGLE. WE PROCEEDED WITH A GAR. CAME BACK AROUND FOR ANOTHER LOOK. THE SECOND TIME THEY VERIFIED THAT THE NOSEWHEEL WAS 90 DEGS TO THE ACFT. WE CAME BACK AROUND WITH SET-UP FOR ANOTHER LNDG. (ALSO DECLARED AN EMER.) NOTIFIED FLT ATTENDANTS TO PREPARE FOR EMER EVAC. WE LANDED; SLOWLY LOWERING THE NOSE GEAR TO THE GND. WE STOPPED APPROX 2500 FT FROM THE END OF RWY 28L. AN EMER EVAC WAS INITIATED WITH NO INJURIES; 26 PAX ON BOARD. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE CAPT SAID THAT ONCE HE REALIZED THAT THE NOSEWHEEL WAS FULLY TURNED TO THE L AND THERE WAS NOTHING HE COULD DO ABOUT IT; HE DECIDED TO MAKE A NORMAL APCH AND LNDG WITHOUT FOAMING THE RWY. HE DID NOT WANT TO TAKE A CHANCE OF GETTING THE MAIN GEAR WHEELS INTO THE FOAM IF THE NOSEWHEELS CAUSED HIM TO SWERVE ON THE RWY. AFTER COMING TO A COMPLETE STOP; THE TWR TOLD HIM TO REMAIN ON HIS FREQ. UNFORTUNATELY; THIS MEANT THAT HE COULD NOT TALK DIRECTLY TO THE CFR PERSONNEL NOR; DUE FREQ CONGESTION; TO THE CTLR EITHER. HE DECIDED TO EVAC AFTER SMOKE ENTERED THE ACFT. 1 PAX HAD A SLIGHT INJURY DURING THIS ACTIVITY. MAINT PERSONNEL FOUND THAT A SEAL IN THE NOSEWHEEL CTRING VALVE HAD LEAKED CAUSING THE R SIDE HYD PRESSURE TO DRIVE THE NOSE GEAR STEERING TO THE L. THE NOSEWHEELS AND THE CTRING VALVE WERE CHANGED AND THE ACFT WAS RETURNED TO SVC ACCORDING TO THE RPTR.