MOMENTARY LOSS OF CTL ON LNDG ROLL WITH RAIN AND XWIND BY S80 AT YUL.

Narrative

LNDG IN YUL ON RWY 24R DURING RAIN; WET RWY; AND XWIND OF 310 DEGS/10 KTS GUSTING 20 KTS; FLAPS 40 DEGS; AND ADJUSTED FINAL SPD OF 143 KTS. CTRLINE LNDG; NEAR TO NORMAL TOUCHDOWN POINT; AND INITIAL REVERSE THRUST OF 1.60 TO 1.80 ON R ENG AND 1.60 ON L ENG. I EXPERIENCED AN IMMEDIATE L DRIFT CONDITION THAT GOT ME CLOSER TO THE L SIDE OF THE RWY EDGE THAN EVER BEFORE IN 6000 HRS AND 10 YRS AS AN S80 CAPT. I HAD NO RUDDER CTL AND FELT LIKE I WAS ACTUALLY SLIDING TO THE L. I HAD MINIMUM BRAKES SELECTED FOR THE CONDITIONS ON THE 11000 FT RWY AND TRIED DIFFERENTIAL BRAKING TO TRY AND HELP THE SIT. FINALLY AFTER A FEW SCARY SECONDS; I CAME OUT OF REVERSE AND GOT RUDDER CTL BACK AND SLOWLY EASED THE ACFT BACK TO CTRLINE. I HAVE LANDED THE S80 IN SOME OF THE TOUGHEST LNDG SITS THAT WE ENCOUNTER AND NEVER HAVE HAD THIS SIT OCCUR BEFORE. PERHAPS I USED TOO MUCH INITIAL REVERSE THRUST DURING THIS XWIND; OR POSSIBLY HIT A GUST WHICH STARTED THE DRIFT; OR BLANKED OUT THE RUDDER CTL WITH TOO MUCH REVERSE THRUST. MY FO AND I THOUGHT THAT WE DID EVERYTHING BY THE BOOK AND THAT IS WHY I AM MAKING THIS AN ASAP RPT. IN LIGHT OF THE LATEST ACCIDENT AT LITTLE ROCK; I FELT COMPELLED TO SHARE THIS INFO SO THAT POSSIBLY WE CAN LEARN MORE ABOUT THE EFFECTS OF REVERSE THRUST ON THE RUDDER AND MAYBE REVISIT OUR PROCS FOR FURTHER REVIEW.