A PA46-350T DURING AN INSTRUCTION FLT ON A SIMULATED ENG OUT MANEUVER INCURRED DAMAGE DUE TO THE LNDG GEAR NOT EXTENDED.

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I WAS PROVIDING THE INSURANCE TRAINING FOR MR X; WHO IS 1 OF 4 NEW OWNERS OF A PA46-350T MALIBU MIRAGE. I AM A CONTRACT FLT INSTRUCTOR AND SPECIALIZE IN INITIAL AND RECURRENT TRAINING IN PIPER PA46 ACFT. MR X WAS COMPLETING 7.5 HRS OF HIS 10.0 HRS REQUIRED BY THE INSURANCE COMPANY. HIS EXPERIENCE INCLUDES 600 HRS IN THE PIPER SARATOGA THAT THEY TRADED IN ON THIS ACFT SO HE IS EXPERIENCED IN HIGH PERFORMANCE AND COMPLEX ACFT. MR X IS A FORMER INST STUDENT OF MINE AS ARE THE OTHER ACFT OWNERS. THE FINAL MANEUVER PLANNED FOR THAT DAY WAS THE SIMULATION OF THE LOSS OF AN ENG. WE BEGAN ON DOWNWIND AT 3000 FT MSL WHICH IS OVER 2000 FT AGL AT ZZZ. OPPOSITE THE TOUCHDOWN POINT I RETARDED THE THROTTLE TO IDLE. AFTER COMPLETING THE DOWNWIND TO BASE TURN WE EXTENDED THE LNDG GEAR. BOTH MR X AND I CONFIRMED THAT WE HAD 3 GREEN LIGHTS. AFTER COMPLETING THE BASE TO FINAL TURN WE ADDED 10 DEGS OF FLAPS. I HAD SOME CONCERN THAT WE WOULD SAFELY CLR SOME TREES ON A 3/4 MI FINAL SO I ADDED ENOUGH PWR TO BE SURE WE WOULD CLR THE TREES; THEN I RETARDED THE THROTTLE TO IDLE. ON SHORT FINAL BOTH MR X AND I CONFIRMED THAT WE HAD 3 GREEN LIGHTS; WE DID NOT HAVE A GEAR LIGHT OR A GEAR WARNING LIGHT ON THE ANNUNCIATOR PANEL; NOR DID WE HAVE A GEAR WARNING HORN. AS WE CROSSED THE THRESHOLD AND BEGAN OUR LNDG FLARE WE HEARD A VERY LOUD SCRAPING SOUND. MY FIRST REACTION WAS TO CALL FOR A GAR AND MR X ADVANCED THE THROTTLE AND WE BEGAN TO CLB. MY INSTINCT WAS TO RECONFIRM THE 3 GREEN LIGHTS AND THEY WERE ON. AFTER WE CLBED 500 FT WE RETRACTED THE FLAPS AND THE GEAR; ALL APPEARED TO BE NORMAL. WE CONDUCTED A VISUAL CHK FROM THE COCKPIT AND THE WINGS; TAIL; FLAPS AND AILERONS ALL APPEARED TO BE OK. THE ENG WAS RUNNING SMOOTHLY; NO VIBRATIONS; AND WE WERE CLBING NORMALLY. I MADE THE DECISION TO RETURN TO OUR HOME ARPT. SINCE THERE WAS SOME CONCERN THAT OUR GEAR WAS OPERATING NORMALLY I CYCLED THE GEAR TWICE AND ALL APPEARED TO BE NORMAL; LIGHTS OFF WHEN THE GEAR WAS UP AND LIGHTS ON WHEN IT WAS DOWN. AFTER LNDG WE NOTICED THE RADAR POD BELOW THE R WING WAS BADLY DAMAGED; CLRLY WHAT WE HEARD SCRAPING. A SMALL PAINT SCRAPE; ABOUT AN INCH LONG ON THE R WINGTIP AND ANOTHER SCRAPE ON THE LOWER R TIP OF THE ELEVATOR. COMING TO THE FRONT OF THE PLANE WE SAW THERE WAS A PROP STRIKE. LESS THAN AN INCH DAMAGE WAS OBSERVED ON EACH PROP BLADES; THE DAMAGE WAS BEYOND THE WHITE AND RED STRIPE ON THE BLADES. AS I MENTIONED ABOVE WE DID NOT HAVE ANY VIBRATIONS OR ABNORMAL INDICATIONS FROM THE ENG OR THE PROP. NONE OF THE ANTENNAE ON THE BOTTOM OF THE ACFT APPEARED TO BE TOUCHED. MR Y WHO MANAGES THE SHOP THEN JOINED US AND POINTED OUT SOME FURTHER DAMAGE. THE PAINT WAS SCRAPED ON THE OUTSIDE OF THE MAIN GEAR WHEELS HOWEVER NONE OF THE GEAR DOORS WERE DAMAGED. THIS WOULD IMPLY A PARTIALLY EXTENDED OR PARTIALLY RETRACTED MAIN GEAR. MR X AND I ONCE AGAIN CONFIRMED THAT WE SAW 3 GREEN LIGHTS JUST BEFORE AND JUST AFTER THE EVENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED BOTH THE STUDENT AND THE RPTR AGREE THAT 3 GREEN LNDG GEAR SAFE LIGHTS WERE ILLUMINATED ON FINAL APCH. THE FAA RPT STATES THE AIRPLANE WAS LANDED WITH THE LNDG GEAR RETRACTED. THE AIRPLANE WAS JACKED AND LNDG GEAR AND LNDG GEAR INDICATION OPERATED NORMALLY. THE AIRPLANE IS NOT IN SVC AS THE ENG IS BEING TORN DOWN FOR INSPECTION DUE TO THE PROP STRIKE. SUPPLEMENTAL INFO FROM ACN 711284: I WAS INSTRUCTED TO NOT PUT LNDG GEAR DOWN AND GO TO BEST GLIDE SPD WHICH IS 90 KTS.