A C310 WITH 2 ATP CFI PLTS PRACTICING ENG OUT TRAINING LANDS GEAR UP AT MSV; NY.

Narrative

TRAINING FLT; WENT TO MSV. FLT WAS TO PRACTICE TKOF AND LNDGS. THE AIRPLANE WAS A TWIN CESSNA 310R. DID A NUMBER OF DIFFERENT TKOF AND LNDGS. THE LAST TKOF WAS TO SIMULATE AN ENG OUT ON TKOF BY REDUCING PWR ON 1 ENG; THEN ADDING ENOUGH PWR TO SIMULATE A FEATHERED ENG. TKOF WAS NORMAL; ON REACHING A SAFE ALT; THE PWR ON THE R ENG WAS REDUCED; NORMAL ENG OUT PROCS WERE DONE; THEN PWR WAS ADDED TO REDUCE DRAG AND SIMULATE A FEATHERED ENG. AS SOON AS THE PWR WAS REDUCED; THE GEAR WARNING HORN BEGAN TO BLARE. SINCE WE WANTED THE BEST SINGLE ENG CLB; WE IGNORED THE GEAR HORN; LEAVING THE GEAR RETRACTED. THE CLBOUT AND PATTERN WAS NORMAL. WE CONCENTRATED ON THE AIRSPD; BANK ANGLE; RATE OF CLB; AND PLANNING THE SINGLE ENG APCH. THERE WAS 1 OTHER AIRPLANE IN THE AREA; DOING PRACTICE APCHS. THEIR FLT PATH WAS NOT IN CONFLICT WITH OURS. BUT WE RECOGNIZED THE ACFT AS BEING FROM OUR HOME BASE; AND THE PLT'S VOICE IDENTED THE INDIVIDUAL GREETINGS WERE EXCHANGED. DURING THE DOWNWIND; I STARTED BUMPS; TOUCHED THE FUEL SELECTOR LEVERS; BUT HAD MY ATTN DIVERTED OUTSIDE THE COCKPIT. I NEVER FINISHED GUMPS. THE AIRPLANE TURNED FROM BASE TO FINAL. WE PICKED UP THE VASI; FOLLOWED IT ALL THE WAY TO THE GND; THE GEAR WARNING HORN BLARING; TO A GEAR UP LNDG. 2 VERY EMBARRASSED ATP'S AND CFI'S. IT WAS AMAZING HOW WE WERE ABLE TO COMPLETELY BLOCK OUT THE GAR HORN AS 'NORMAL' AND TOTALLY IGNORE IT. THEY WERE A DISTR FROM OUR NORMAL LNDG ROUTINE; SOME FROM RECOGNIZING THE OTHER AIRPLANE; AND SOME FROM THE TRAINING SIT AND DISCUSSION. SUPPLEMENTAL INFO FROM ACN 523788: THE RECURRENT TRAINING PROCESS WAS DISCUSSED IN A BRIEFING PRIOR THE FLT. THE CONCENTRATED EFFORT TO GAIN ALT AND MAINTAIN CTL OF THE ACFT; I BELIEVE CAUSED 2 THINGS: 1) I TUNED OUT THE SOUND OF THE GEAR HORN; AND 2) I MISSED THE PRELNDG CALLOUTS THAT I NORMALLY USE ON DOWNWIND; BASE AND FINAL LEGS. THOSE CALLOUTS ARE 'BOOST PUMPS' ON; FUEL SELECTORS ON MAINS; UNDERCARRIAGE DOWN;; MIXTURE AND PROP POS AND FINALLY COWL AND WING FLAPS. DURING SINGLE ENG LNDG PROCS; I WOULD NORMALLY DECLARE THAT THE GEAR WILL BE EXTENDED ON THE BASE LEG. I AILED TO DO THAT THIS TIME AND THEREFORE THE PNF WAS NOT ALERTED TO WHEN IT WOULD OCCUR. TO PREVENT A RECURRENCE AND TO CORRECT THE SIT; CONSTANT VERBAL CALLOUTS OF PROCS COULD PREVENT THE POSSIBILITY OF FIXATION ON TEDIOUS OPS AND KEEP ALL OF THE FACTORS INVOLVED IN THE SIT UP IN CONSTANT VIEW.