C210 PLT LANDS WITH PARTIALLY EXTENDED GEAR.

Narrative

ON SATURDAY MORNING; MYSELF AND A FLT OF 4 TOOK OFF FOR BREAKFAST. GEAR RETRACTED AND LOCKED DOWN AS NORMAL. ALL SYS NORMAL. MY WIFE AND I TOOK OFF AGAIN AT ABOUT XA30 FOR A LUNCH FLT. GEAR RETRACTED OK; BUT UPON ARR AT ZZZ1; WHEN I LOWERED GEAR; THE MAINS ONLY CAME PART WAY DOWN. I HAD 2 SMALL WIDE ANGLE MIRRORS ONE ON R; OTHER ON L WING; TO CONFIRM GEAR WERE 1/2 WAY DOWN. I PULLED EMER GEAR HANDLE AND TRIED TO PUMP GEAR DOWN; THEN BACK UP. GEAR WOULD NOT MOVE IN EITHER DIRECTION. I DIVERTED BACK TO ZZZ PUMPING GEAR HANDLE TILL EMER HANDLE QUIT PUMPING HYD OIL AND SPRINGING BACK. I CALLED ZZZ TWR AND ADVISED I HAD A GEAR PROB; MADE A LOW PASS OVER RWY; CONFIRMED PROB BY CTL TWR AND ANOTHER AIRPLANE FLYING ALONGSIDE. AFTER TWR GOT CONFIRMATION; FIRE TRUCKS WERE ON STAND-BY ALONG RWY 34. I WAS CLRED TO LAND. I ADVISED MY WIFE WHAT THE CHAIN OF EVENTS WOULD BE TO MAKE HER COMFORTABLE ABOUT THE SIT: COME OVER THE RWY; PULL THE MIXTURE; PULL THE PWR; GAS OFF; MASTER OFF; IGNITION SWITCH TO OFF; OPEN DOORS THEN MAKE THE BEST LNDG I COULD. THE PARTIALLY DOWN MAIN GEAR TOUCHED FIRST ON THE RWY. I COULD HEAR THE SKIDDING SOUND OF THE MAIN TIRES; THEN THE NOSE WHEEL TOUCHED DOWN. I HAD FULL AFT PRESSURE ON YOKE AND WAS ABLE TO STEER THE NOSEWHEEL TO KEEP PLANE LEVEL UNTIL SPD DROPPED TO ABOUT 20 MPH BY STEERING WITH RUDDER PEDALS. AT ABOUT 20 MPH; THE NOSEWHEEL PULLED TO THE R AND R WINGTIP SCRAPED ON THE RWY TO A STOP. MY WIFE AND I BAILED OUT THE OPEN R DOOR; RAN CLR OF THE ACFT UNTIL FIRE PERSONNEL DEEMED SAFE. PLANE WAS RAISED WITH A SLING AND MAIN GEAR WERE PULLED BY HAND FORWARD AND LOCKED INTO LNDG POS. PLANE WAS ROLLED OFF THE RWY WITH A TUG UNDER THE NOSEWHEEL TO RAMP. CAUSE HAS NOT BEEN DETERMINED AS YET; BUT PLT THINKS A LINE MAY HAVE BROKEN AND ALL HYD FLUID IN RESERVOIR MAY HAVE BEEN PUMPED OVERBOARD WHILE PUMPING EMER GEAR HANDLE. NO INJURIES. ALL TWR AND FIRE DEPT PERSONNEL COMMENTED THAT THE PLT DID A GOOD JOB LNDG AND SAVING THE PLANE; ENG AND PROP. NO PROP STRIKE.