Narrative:

Our flight was delayed in ord for maintenance, then left about 1 hour late for yul. En route ATIS said twring cumulus (tcus) near field and 6100 ft overcast, winds 280 degrees at 8 KTS. In descent told by approach that moderate chop reported from 9000 ft to 12000 ft. We got the chop all the way down to 1500 ft. Also got several major showers before getting on final. From 1000 ft down, the approach was fine, no chop and no more rain, but field obviously very wet. Winds reported 310 degrees at 10 KTS gusts to 20 KTS. Using speeds for 122000 pounds plus 15 KTS. We landed right on speed at 143 KTS, on centerline, in the landing zone. All system worked as advertised, spoilers, autobrakes, and reverse. Shortly after captain got to 1.6 EPR, aircraft drifted rapidly to left. Full rudder and aileron failed to stop drift. Captain came out of reverse stopping our drift on the left side of the runway. Since he kept the aircraft facing down the runway we didn't fishtail, just drifted. This happened so fast I was really surprised. I backed him up on the controls and talked about centerline, but with the rudder blanked there is little you can do but come out of reverse. I completely disagree with the 1.6 EPR procedure immediately after landing, that is what caused our problem. It also would have been nice to know how wet the runway was. No braking action reports were given. They may not have had time as it was a small but fast moving storm.

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Original NASA ASRS Text

Title: AN MD-SUPER 80 FO RPTED THAT THE CAPT WAS UNABLE TO KEEP THE ACFT FROM DRIFTING RAPIDLY TO THE L UPON LNDG AT CYUL. THE FO ATTRIBUTED THE DRIFT TO RUDDER BLANKING AND TO HIS COMPANY'S 1 PT 6 EPR PROC IMMEDIATELY AFTER LNDG.

Narrative: OUR FLT WAS DELAYED IN ORD FOR MAINT, THEN LEFT ABOUT 1 HR LATE FOR YUL. ENRTE ATIS SAID TWRING CUMULUS (TCUS) NEAR FIELD AND 6100 FT OVCST, WINDS 280 DEGS AT 8 KTS. IN DSCNT TOLD BY APCH THAT MODERATE CHOP RPTED FROM 9000 FT TO 12000 FT. WE GOT THE CHOP ALL THE WAY DOWN TO 1500 FT. ALSO GOT SEVERAL MAJOR SHOWERS BEFORE GETTING ON FINAL. FROM 1000 FT DOWN, THE APCH WAS FINE, NO CHOP AND NO MORE RAIN, BUT FIELD OBVIOUSLY VERY WET. WINDS RPTED 310 DEGS AT 10 KTS GUSTS TO 20 KTS. USING SPDS FOR 122000 LBS PLUS 15 KTS. WE LANDED RIGHT ON SPD AT 143 KTS, ON CTRLINE, IN THE LNDG ZONE. ALL SYS WORKED AS ADVERTISED, SPOILERS, AUTOBRAKES, AND REVERSE. SHORTLY AFTER CAPT GOT TO 1.6 EPR, ACFT DRIFTED RAPIDLY TO L. FULL RUDDER AND AILERON FAILED TO STOP DRIFT. CAPT CAME OUT OF REVERSE STOPPING OUR DRIFT ON THE L SIDE OF THE RWY. SINCE HE KEPT THE ACFT FACING DOWN THE RWY WE DIDN'T FISHTAIL, JUST DRIFTED. THIS HAPPENED SO FAST I WAS REALLY SURPRISED. I BACKED HIM UP ON THE CTLS AND TALKED ABOUT CTRLINE, BUT WITH THE RUDDER BLANKED THERE IS LITTLE YOU CAN DO BUT COME OUT OF REVERSE. I COMPLETELY DISAGREE WITH THE 1.6 EPR PROC IMMEDIATELY AFTER LNDG, THAT IS WHAT CAUSED OUR PROB. IT ALSO WOULD HAVE BEEN NICE TO KNOW HOW WET THE RWY WAS. NO BRAKING ACTION RPTS WERE GIVEN. THEY MAY NOT HAVE HAD TIME AS IT WAS A SMALL BUT FAST MOVING STORM.

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.