WDB MAKES HARD LNDG; FLAP DAMAGE.

Narrative

LNDG ON RWY 1L AT DULLES INTL. FO FLYING. LOC AND GS OTS. NO VASI. TOTALLY VISUAL APCH. WIND 300 DEGS AT 15 KTS AND RWY HDG 010 DEGS. TURNED FINAL APPROX 10 MI OUT; 10 DEGS FLAPS AT 3000 FT. MAINTAINED 3000 FT TILL WHAT WOULD HAVE BEEN GS INTERCEPT. EXTENDED GEAR AND ARMED AUTO SPOILERS. MADE PROPER CALLS AND RESPONSES AT 2500 FT; 1000 FT; AND 500 FT. 138 KTS WAS REF SPD AND 146 WAS TARGET SPD WITH WIND FACTOR ADDED IN. PROFILE WAS GOOD AND TARGET SPD MAINTAINED. SELECTED LNDG FLAPS 25 DEGS FROM 20 DEGS APPROX 1500 FT. APCH PROFILE AND SPD NORMAL TILL APPROX 150 FT. NOTED SPD DECAYING TOWARDS 140 KTS AND ADVISED FO WHO RESPONDED BY ADDING SOME PWR. ADVISED FO AT APPROX 100 FT STILL SLIGHTLY SLOW AT APPROX 139 OR 140 KTS. HE RESPONDED BY ADDING MORE PWR. AT APPROX 50-75 FT I DIDN'T LIKE THE FEEL AND LOOK OF THINGS AND PUSHED THE THRUST LEVERS TO THE GAR POS AND AT THE SAME TIME PULLED THE YOKE BACK. APPROX 2-3 SECONDS LATER WE MADE FIRM CONTACT WITH THE RWY. I TOOK CTL OF THE ACFT THROUGHOUT THE REVERSING; BRAKING AND ROLLOUT. AFTER ARR AT GATE WE WERE ADVISED OF A WITNESSED L WING FLAP DAMAGE. DON'T KNOW WHAT CAUSED AIRSPD DECAY OR INABILITY TO FLARE AND CAN'T ADD ANY IDEAS FOR PREVENTION. DO KNOW I SHOULD HAVE WRITTEN A HARD LNDG RPT IN LOGBOOK; BUT THAT POINT SEEMED MOOT AT THE TIME BECAUSE OF THE PHYSICAL EVIDENCE. I RECOMMEND ANYONE WHO SUSPECTS HE WAS INVOLVED IN A HARD LNDG TO WRITE IT UP SO PROPER INSPECTION CAN BE MADE; REGARDLESS IF THERE IS PHYSICAL EVIDENCE OR NOT.