Narrative:

Adverse winds on landing, sudden strong unpredictable shear in flare and touchdown. On approach to ewr, tower reported gusts to 30 KTS and steady state of 300 degrees at 18 KTS. We elected to use flaps 3 degrees and planned for gusty wind conditions. All approach indications were normal through 50 ft AGL, on centerline with full crab of 25 degrees azimuth to the right. At 30 ft, air was still relatively smooth and steady state. As we decrabbed and held right wing down, we encountered sudden drop-off. The aircraft contacted the pavement firmly on the runway centerline approximately 1800 ft from the threshold and began an uncontrollable roll to the left even with full right sidestick deflection. The aircraft did not exceed 15 degrees of roll and was promptly returned to the centerline. It had drifted 20 ft to the left of center. The rollout was normal and taxi in was normal. Postflt inspection revealed no evidence of contacting the runway and no evidence of damage to airframe or flight control surfaces. All wheel trucks appeared normal as well and the aircraft subsequently flew another uneventful departure and arrival with same cockpit crew. No damage, no injuries, no ATC issues, crew worked well together and responded properly to severe unforecast WX event. Airplane flight manual procedures for windshear worked well. No predictive warning though.

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Original NASA ASRS Text

Title: A MORE FIRM THAN DESIRED TOUCHDOWN IS THE END RESULT, EVEN THOUGH A PLAN FOR AN APCH IN XWIND AND GUSTY CONDITIONS HAD BEEN MADE.

Narrative: ADVERSE WINDS ON LNDG, SUDDEN STRONG UNPREDICTABLE SHEAR IN FLARE AND TOUCHDOWN. ON APCH TO EWR, TWR RPTED GUSTS TO 30 KTS AND STEADY STATE OF 300 DEGS AT 18 KTS. WE ELECTED TO USE FLAPS 3 DEGS AND PLANNED FOR GUSTY WIND CONDITIONS. ALL APCH INDICATIONS WERE NORMAL THROUGH 50 FT AGL, ON CTRLINE WITH FULL CRAB OF 25 DEGS AZIMUTH TO THE R. AT 30 FT, AIR WAS STILL RELATIVELY SMOOTH AND STEADY STATE. AS WE DECRABBED AND HELD R WING DOWN, WE ENCOUNTERED SUDDEN DROP-OFF. THE ACFT CONTACTED THE PAVEMENT FIRMLY ON THE RWY CTRLINE APPROX 1800 FT FROM THE THRESHOLD AND BEGAN AN UNCTLABLE ROLL TO THE L EVEN WITH FULL R SIDESTICK DEFLECTION. THE ACFT DID NOT EXCEED 15 DEGS OF ROLL AND WAS PROMPTLY RETURNED TO THE CTRLINE. IT HAD DRIFTED 20 FT TO THE L OF CTR. THE ROLLOUT WAS NORMAL AND TAXI IN WAS NORMAL. POSTFLT INSPECTION REVEALED NO EVIDENCE OF CONTACTING THE RWY AND NO EVIDENCE OF DAMAGE TO AIRFRAME OR FLT CTL SURFACES. ALL WHEEL TRUCKS APPEARED NORMAL AS WELL AND THE ACFT SUBSEQUENTLY FLEW ANOTHER UNEVENTFUL DEP AND ARR WITH SAME COCKPIT CREW. NO DAMAGE, NO INJURIES, NO ATC ISSUES, CREW WORKED WELL TOGETHER AND RESPONDED PROPERLY TO SEVERE UNFORECAST WX EVENT. AIRPLANE FLT MANUAL PROCS FOR WINDSHEAR WORKED WELL. NO PREDICTIVE WARNING THOUGH.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.