CL65 CREW HAD HARD LNDG AT DFW.

Narrative

THIS OCCURRENCE WAS ON A NORMAL SCHEDULED FLT FROM AMA TO DFW ABOARD A CL65. THE AIRPLANE WAS VERY LIGHT WT. WE WERE ONLY CARRYING 5 PAX OUT OF 50 THAT FIT INTO THE ACFT. AS WE WERE ARRIVING AT DFW; EVERYTHING WAS NORMAL. THERE WAS A LITTLE BIT OF TURB; BUT IT WASN'T A FACTOR. WE WERE CLRED TO LAND RWY 35C AT DFW INTL ARPT. THE APCH TO LNDG WAS NORMAL; MAINTAINING VREF SPD; BUT A LITTLE BELOW THE GS. THIS WASN'T A BIG DEAL SINCE WE WERE VISUAL. AT 100 FT AGL WE ARE TRAINED TO BRING THE PWR BACK TO FLARE AND LAND. THAT DAY; HOWEVER.; I WAITED JUST A LITTLE LONGER BECAUSE I WASN'T QUITE OVER THE RWY YET. THIS RESULTED IN AN UNUSUAL GND EFFECT; WHERE THE ACFT FLOATED LONGER THAN USUAL. I FELT THE ACFT GETTING OUT OF GND EFFECT TRYING TO FLY; SO I ADDED PWR (AS THE CAPT WAS ADVISING ME TO DO JUST THAT). NEXT THING I KNOW; THE AIRPLANE IS HITTING THE GND REALLY HARD. THE PAX ARE OK. OUR FLT ATTENDANT HAD SOME MUSCLE PAINS. I LEARNED THAT THE AIRPLANE TENDS TO FLOAT MORE AS IT IS LIGHTER; AND NOW I KNOW WHAT TO EXPECT AND HOW TO CORRECT ACCORDINGLY.