AN ATR72 PIC LAMENTS HIS DECISION TO CONTINUE A XWIND LNDG THAT WAS CHALLENGING BUT SUCCESSFULLY COMPLETED AT ATL; GA.

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DURING APCH WE HAD VISUAL CONTACT WITH THE ARPT. AT ABOUT 4 MI RWY WAS IN SIGHT; NO TURB OR RAIN. TWR ADVISED A MICROBURST WAS ON RWY 27R/26L (THAT'S WHAT I HEARD; I THOUGHT). ABOUT 1 MI OUT; ENCOUNTERED MODERATE RAIN FOR ABOUT 15 SECONDS. I THOUGHT THE PREVIOUS ACFT HAD LANDED; SO I CONTINUED (I WAS PF) AS NO TURB OR WINDSHEAR CONDITIONS WERE BEING EXPERIENCED. TWR HAD ADVISED -50 KTS AND THEN -40 KTS; BUT OUR SPD WAS STEADY AND THE APCH UNEVENTFUL. I ELECTED TO LEAVE FLAPS AT 15 DEGS IN CASE A GAR WAS CONDUCTED (NORMAL LNDG 30 DEGS FLAPS). JUST AS I FLARED FOR LNDG; WE BEGAN TO EXPERIENCE STRONG XWIND FROM THE R. LANDED ACFT AND HAD SOME DIRECTIONAL CTL PROBS (ACFT APPEARED TO BE HYDROPLANING) WHERE THE ACFT WANTED TO DRIFT L DURING ROLLOUT. AS WE SLOWED; CTL WAS REGAINED AND WE TAXIED OFF THE RWY TO THE RAMP. LATER; ANOTHER COMPANY PLT (WHO WAS WAITING TO TAKE OFF) TOLD ME THAT THE PRECEDING AND FOLLOWING ACFT HAD GONE AROUND. AS MENTIONED; I BELIEVED THE PRECEDING ACFT HAD LANDED. IN HINDSIGHT; I SHOULD HAVE GONE AROUND AND WAITED FOR BETTER WX CONDITIONS. I WAS CONTINUING THE APCH AS I HAD NOT EXPERIENCED ANY SERIOUS WX; AIRSPD LOSS OR GAIN; OR ANY KIND OF WINDSHEAR. AS I MENTIONED; ONLY A STRONG WIND FROM THE R WAS EXPERIENCED DURING THE FLARE FOR LNDG. THIS INCIDENT (ALTHOUGH TURNING OUT OK) COULD HAVE BEEN SERIOUS. I HAVE REPLAYED THIS THE PAST 3 NIGHTS AND HAVE SCOLDED MYSELF FOR CONTINUING WHEN THE SAFER COURSE WOULD HAVE BEEN TO GO AROUND. I THOUGHT TWR HAD SAID A MICROBURST WAS BTWN RWY 26L/27R; SURFACE WINDS WERE LIKE 340 DEGS AT 9 KTS; SO I CONTINUED. ALL I CAN SAY IS; I REGRET MY ACTIONS AND WILL NOT HESITATE PERFORMING A GAR NEXT TIME. ALTHOUGH LNDG ROLLOUT WAS DICEY AND ENDED UP SUCCESSFULLY; IT COULD HAVE TURNED OUT FOR THE WORSE. MY JUDGEMENT WAS POOR WHEN I AM ALWAYS RESPECTFUL OF WX. AFTER 11 YRS FLYING AIRLINE EQUIP; THIS WAS A POOR DECISION ON MY PART TO CONTINUE. IT WILL NOT HAPPEN AGAIN.