Narrative:

Landing in yul on runway 24R during rain, wet runway, and crosswind of 310 degrees/10 KTS gusting 20 KTS, flaps 40 degrees, and adjusted final speed of 143 KTS. Centerline landing, near to normal touchdown point, and initial reverse thrust of 1.60 to 1.80 on right engine and 1.60 on left engine. I experienced an immediate left drift condition that got me closer to the left side of the runway edge than ever before in 6000 hours and 10 yrs as an S80 captain. I had no rudder control and felt like I was actually sliding to the left. I had minimum brakes selected for the conditions on the 11000 ft runway and tried differential braking to try and help the situation. Finally after a few scary seconds, I came out of reverse and got rudder control back and slowly eased the aircraft back to centerline. I have landed the S80 in some of the toughest landing sits that we encounter and never have had this situation occur before. Perhaps I used too much initial reverse thrust during this crosswind, or possibly hit a gust which started the drift, or blanked out the rudder control with too much reverse thrust. My first officer and I thought that we did everything by the book and that is why I am making this an as soon as possible report. In light of the latest accident at little rock, I felt compelled to share this information so that possibly we can learn more about the effects of reverse thrust on the rudder and maybe revisit our procedures for further review.

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Original NASA ASRS Text

Title: 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.

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.