Narrative:

Bay approach direct to enter left downwind runway 29 at orabu 2K bay approach, handoff to sjc tower abeam tower downwind ask sjc tower for runway 30R. Sjc tower clears change to runway 30R, 'follow cessna on final.' reduced power to 15 inches, 15 degree flaps, turn base, need to slow for traffic, put gear switch down and flaps to 35 degrees, overtaking traffic on final and cleared to land by tower. Ask for change to runway 30L to avoid traffic on final. Tower approves change and clears to land runway 30L. Have conversation with passenger about runway change. Reduce power to 12 inches at flare, plane begins to sink, gear horn goes off. Immediate application of full power, nose propellers and propellers strike runway surface. Inform tower that I will go around, as gear was not extended. Tower approves and said they hadn't noticed lack of gear. I noticed gear switch had been bumped to center (off) position. Climb to tpa, extend gear successfully, cleared to land runway 30R, complete landing, tower says 'good checklist?' taxi to park. Factors: 3 position gear switch (up, off, down), no gear horn above 12 inches manifold pressure or full flaps not linked to horn, lack of check on my part (3 in green), multiple runway changes on final, passenger distrs on final. This plane has been previously landed gear-up by other person, same switch position (off). Propeller strike was minor, no engine stoppage. No fuselage or wing damage.

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Original NASA ASRS Text

Title: PLT OF AN SMT TWIN STRUCK THE PROPS DURING LNDG FLARE WITH GEAR UP AND SUBSEQUENT GAR.

Narrative: BAY APCH DIRECT TO ENTER L DOWNWIND RWY 29 AT ORABU 2K BAY APCH, HDOF TO SJC TWR ABEAM TWR DOWNWIND ASK SJC TWR FOR RWY 30R. SJC TWR CLRS CHANGE TO RWY 30R, 'FOLLOW CESSNA ON FINAL.' REDUCED PWR TO 15 INCHES, 15 DEG FLAPS, TURN BASE, NEED TO SLOW FOR TFC, PUT GEAR SWITCH DOWN AND FLAPS TO 35 DEGS, OVERTAKING TFC ON FINAL AND CLRED TO LAND BY TWR. ASK FOR CHANGE TO RWY 30L TO AVOID TFC ON FINAL. TWR APPROVES CHANGE AND CLRS TO LAND RWY 30L. HAVE CONVERSATION WITH PAX ABOUT RWY CHANGE. REDUCE PWR TO 12 INCHES AT FLARE, PLANE BEGINS TO SINK, GEAR HORN GOES OFF. IMMEDIATE APPLICATION OF FULL PWR, NOSE PROPS AND PROPS STRIKE RWY SURFACE. INFORM TWR THAT I WILL GAR, AS GEAR WAS NOT EXTENDED. TWR APPROVES AND SAID THEY HADN'T NOTICED LACK OF GEAR. I NOTICED GEAR SWITCH HAD BEEN BUMPED TO CTR (OFF) POS. CLB TO TPA, EXTEND GEAR SUCCESSFULLY, CLRED TO LAND RWY 30R, COMPLETE LNDG, TWR SAYS 'GOOD CHKLIST?' TAXI TO PARK. FACTORS: 3 POS GEAR SWITCH (UP, OFF, DOWN), NO GEAR HORN ABOVE 12 INCHES MANIFOLD PRESSURE OR FULL FLAPS NOT LINKED TO HORN, LACK OF CHK ON MY PART (3 IN GREEN), MULTIPLE RWY CHANGES ON FINAL, PAX DISTRS ON FINAL. THIS PLANE HAS BEEN PREVIOUSLY LANDED GEAR-UP BY OTHER PERSON, SAME SWITCH POS (OFF). PROP STRIKE WAS MINOR, NO ENG STOPPAGE. NO FUSELAGE OR WING DAMAGE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.