EMB145 CAPT MADE HARD LNDG AFTER STALLING ACFT THE LAST 100 FT PRIOR TO TOUCHDOWN. INCIDENT WAS NOT RPTED; OR WRITTEN; IN THE LOG SINCE NO DAMAGE WAS OBSERVED BY THE CREW'S POSTFLT INSPECTION. HOWEVER; THE SUBSEQUENT FLC NOTICED TAIL DAMAGE AFTER THEIR FIRST FLT IN DAYLIGHT CONDITIONS.

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I SERVED AS FO; AND PNF; ON ACR FLT FROM PIT TO ROA. WE BEGAN A NORMAL VISUAL APCH TO RWY 33 IN ROA. THE CAPT BRIEFED THAT WE WOULD NOT DO A GAR UNDER ANY CIRCUMSTANCES; AS TKOFS WERE NOT AUTH AT NIGHT FROM RWY 33. AT 300 FT; I CALLED THAT WE WERE 1 DOT HIGH ON THE PAPI AND 5 KIAS ABOVE APCH SPD. THE CAPT PULLED THE THRUST TO IDLE. I CALLED OUT OUR DECREASING AIRSPDS; THEN THE STALL STICKSHAKER BRIEFLY ACTIVATED. THE CAPT ADDED THRUST; AT WHICH POINT THE STICK SHAKER ACTIVATED AGAIN AND WE APPEARED TO STALL; FALLING RAPIDLY THE LAST 100 FT ONTO THE RWY. WE LANDED VERY HARD. I INSPECTED THE ACFT CAREFULLY WITH A FLASHLIGHT AND FOUND NO DAMAGE. THE NEXT MORNING; THE ACFT WAS FLOWN INTO CLT WHERE DAMAGE FROM A TAILSTRIKE WAS NOTED. THE ACFT WAS THEN GNDED FOR MAINT REPAIRS. THE DAMAGE MAY HAVE BEEN FROM OUR HARD LNDG. SUPPLEMENTAL INFO FROM ACN 527567: UNKNOWINGLY FLEW AN ACFT THAT HAD SUBSTANTIAL TAIL DAMAGE FROM THE PREVIOUS FLT. MY FO; WHO I DELEGATED TO PREFLT THE ACFT; DID NOT INFORM ME OF ANY DAMAGE. IT WAS DARK AT THE TIME; AND A 2 'D' CELL FLASHLIGHT WAS USED FOR THE EXTERIOR PREFLT. GND CREW DID NOT INFORM ME OF ANY DAMAGE EITHER. WE FLEW FLT FROM ROA TO CLT WITH 26 PAX. THE FLT WAS UNEVENTFUL. NO UNUSUAL SOUNDS OR CTL PROBS WERE NOTED. DAYLIGHT POSTFLT INSPECTION REVEALED TAIL DAMAGE CONSISTENT WITH A VERY HARD TAILSTRIKE. PREVIOUS CREW OF THAT ACFT LATER RPTED OF A HARD LNDG; WITH STICKSHAKER AND/OR PUSHER; THE NIGHT BEFORE. NO MAINT RECORD OF A HARD LNDG WAS DOCUMENTED BY PREVIOUS CREW. UNFORTUNATELY; WE (I) FLEW THE ACFT 1 LEG BEFORE THE DAMAGE WAS NOTICED.