What was found
ON DOWNWIND, GEAR HORN SOUNDED AND OBSERVED NO GREEN GEAR INDICATION, CYCLED GEAR, NO HELP. PERFORMED MANUAL GEAR EXTENSION PROCEDURES, NO HELP. FELT A BINDING OR PREMATURE STOP WHILE CRANKING DOWN GEAR FOR MANUAL EXTENSION. GEAR HORN AND UNSAFE INDICATION REMAINED. PERFORMED A FLY-BY, AND WAS ADVISED THAT THE GEAR APPEARED TO BE DOWN. SET UP FOR THE APPROACH AND CUT OFF ENGINE OVER THE THRESHOLD. ON TOUCHDOWN, THE AIRCRAFT SETTLED ON THE GEAR DOORS AND SKIDDED TO A STOP ON CENTER LINE.