CL65 WINGTIP CONTACTS GND DURING WIND GUST ON LNDG CVG.

Narrative

LNDG RWY 18R; WINDS 270 DEGS AT 10 KTS GUSTING TO 18 KTS RPTED ON ATIS; SHORT FINAL TWR RPTED WIND AT 270 DEGS AT 13 KTS. WIND GUST IN THE FLARE (OR WIND DROPPED OFF); THE R WING DROPPED LOW; CORRECTED. THERE WAS NO BANK ANGLE WARNING FROM GPWS. ON POSTFLT INSPECTION WE FOUND A SCRAPE ON THE UNDERSIDE OF THE WINGTIP. AIRSPD WAS NORMAL OVER THE THRESHOLD (SLIGHTLY ABOVE VREF) THEN DECREASED NORMALLY DURING THE FLARE. ACFT ATTITUDE APPEARED NORMAL FOR THESE WIND CONDITIONS (R WING LOWERED; L RUDDER) DURING THE FLARE WHEN SUDDENLY THE R WING DROPPED. THE FO WAS FLYING THE ACFT. AS I REACHED FOR THE YOKE; HE WAS ALREADY CORRECTING AND WE BOTH HELD THE YOKE UNTIL THE ROLL ATTITUDE WAS CORRECTED. THEREAFTER; THE LNDG WAS NORMAL BUT FIRM. DURING THIS WHOLE LNDG PHASE WE NEVER FELT OR HEARD CONTACT WITH THE RWY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR CORRECTS STATEMENT TO READ THAT THE GPWS DOES NOT OPERATE BELOW 50 FT AGL; BUT HAS INCREASING SENSITIVITY UP TO THAT POINT ON DSCNT. HE FURTHER STATES THAT THE ACR REMOVED BOTH CREW MEMBERS FROM FLYING STATUS UNTIL SUCH TIME THAT SIMULATOR INSTRUCTION TO REINFORCE XWIND LNDG TECHNIQUES WAS ACCOMPLISHED.