Narrative:

Approaching chicago O'hare; planned runway 9R approach. On downwind runway 9R was announced closed. We were vectored for an approach to runway 14R. Winds were 040 degrees/20 KTS. Ceiling broken 070 with sn. While we were on final approach a boeing 777 landed and reported braking action as 'poor.' we performed a missed approach. After holding we were offered runway 4R (winds increased and exceed operational limits for runway 14R). We accepted. While on downwind the controller reported the runway 4R was now closed and would not open; again. Informed that runway 9R was now open and 'plowed and deiced' with MU34. The mu computed to fair braking in our manual. We were barely legal with winds 030 degrees/21 KTS gusting 28 KTS. Elected to perform a monitored CAT 1 approach to runway 9R; flaps 20 degrees. At 100 ft above minimums; I announced I have the airplane. At 100 ft AGL I put in crosswind controls. We were about 8 ft right of centerline just prior to touchdown; but tracking straight down the runway. Landed at a normal point in the touchdown zone; on speed. 'Med' automatic-brakes had been selected prior to landing. Maximum reversers used after landing. Everything was normal and we were on centerline approaching 80 KTS. Then the aft end of the airplane began sliding right and the nose yawed toward the wind (left). The airplane began sliding left. I used rudder; differential reverse; and at some point after pressing brakes hard enough differential braking and nosewheel steering; but the leftward slide continued. Braking seemed close to nil. Airplane stopped 70 ft west of the taxiway M6 sign; with the left main wheels off the runway and the nosewheels barely off; and the right mains on the runway. Airplane was cocked 10 degrees to 20 degrees left.

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Original NASA ASRS Text

Title: A300 FLT CREW HAS A RWY EXCURSION AT ORD.

Narrative: APCHING CHICAGO O'HARE; PLANNED RWY 9R APCH. ON DOWNWIND RWY 9R WAS ANNOUNCED CLOSED. WE WERE VECTORED FOR AN APCH TO RWY 14R. WINDS WERE 040 DEGS/20 KTS. CEILING BROKEN 070 WITH SN. WHILE WE WERE ON FINAL APCH A BOEING 777 LANDED AND RPTED BRAKING ACTION AS 'POOR.' WE PERFORMED A MISSED APCH. AFTER HOLDING WE WERE OFFERED RWY 4R (WINDS INCREASED AND EXCEED OPERATIONAL LIMITS FOR RWY 14R). WE ACCEPTED. WHILE ON DOWNWIND THE CTLR RPTED THE RWY 4R WAS NOW CLOSED AND WOULD NOT OPEN; AGAIN. INFORMED THAT RWY 9R WAS NOW OPEN AND 'PLOWED AND DEICED' WITH MU34. THE MU COMPUTED TO FAIR BRAKING IN OUR MANUAL. WE WERE BARELY LEGAL WITH WINDS 030 DEGS/21 KTS GUSTING 28 KTS. ELECTED TO PERFORM A MONITORED CAT 1 APCH TO RWY 9R; FLAPS 20 DEGS. AT 100 FT ABOVE MINIMUMS; I ANNOUNCED I HAVE THE AIRPLANE. AT 100 FT AGL I PUT IN XWIND CTLS. WE WERE ABOUT 8 FT R OF CTRLINE JUST PRIOR TO TOUCHDOWN; BUT TRACKING STRAIGHT DOWN THE RWY. LANDED AT A NORMAL POINT IN THE TOUCHDOWN ZONE; ON SPD. 'MED' AUTO-BRAKES HAD BEEN SELECTED PRIOR TO LNDG. MAX REVERSERS USED AFTER LNDG. EVERYTHING WAS NORMAL AND WE WERE ON CTRLINE APCHING 80 KTS. THEN THE AFT END OF THE AIRPLANE BEGAN SLIDING R AND THE NOSE YAWED TOWARD THE WIND (L). THE AIRPLANE BEGAN SLIDING L. I USED RUDDER; DIFFERENTIAL REVERSE; AND AT SOME POINT AFTER PRESSING BRAKES HARD ENOUGH DIFFERENTIAL BRAKING AND NOSEWHEEL STEERING; BUT THE LEFTWARD SLIDE CONTINUED. BRAKING SEEMED CLOSE TO NIL. AIRPLANE STOPPED 70 FT W OF THE TXWY M6 SIGN; WITH THE L MAIN WHEELS OFF THE RWY AND THE NOSEWHEELS BARELY OFF; AND THE R MAINS ON THE RWY. AIRPLANE WAS COCKED 10 DEGS TO 20 DEGS L.

Data retrieved from NASA's ASRS site as of January 2009 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.