Narrative:

The first officer was flying the approach when we saw 2 caution messages: 'inboard flight spoilers' and 'inboard spoilerons.' he immediately said that he could feel a difference in roll response (later on describing it as 'sluggish') but that the airplane was still ctlable. We landed uneventfully; and while taxiing to the gate; looked at the emergency/abnormal checklist. This did not apply on the ground and would not have changed what we did when the problem occurred at 100 ft AGL. Maintenance first diagnosed the problem as a PCU that would need replacement. 30 mins later; they found that a PCU sensor was the problem; which was fixed. The airplane was then cleared for revenue service; so dispatch kept us in the airplane for our remaining 3 legs of the day.

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Original NASA ASRS Text

Title: FLT CREW OF CL65 ENCOUNTER ROLL CTL SPOILER ANOMALY ON CLOSE IN FINAL APCH. CONTINUE APCH AND LAND SAFELY.

Narrative: THE FO WAS FLYING THE APCH WHEN WE SAW 2 CAUTION MESSAGES: 'INBOARD FLT SPOILERS' AND 'INBOARD SPOILERONS.' HE IMMEDIATELY SAID THAT HE COULD FEEL A DIFFERENCE IN ROLL RESPONSE (LATER ON DESCRIBING IT AS 'SLUGGISH') BUT THAT THE AIRPLANE WAS STILL CTLABLE. WE LANDED UNEVENTFULLY; AND WHILE TAXIING TO THE GATE; LOOKED AT THE EMER/ABNORMAL CHKLIST. THIS DID NOT APPLY ON THE GND AND WOULD NOT HAVE CHANGED WHAT WE DID WHEN THE PROB OCCURRED AT 100 FT AGL. MAINT FIRST DIAGNOSED THE PROB AS A PCU THAT WOULD NEED REPLACEMENT. 30 MINS LATER; THEY FOUND THAT A PCU SENSOR WAS THE PROB; WHICH WAS FIXED. THE AIRPLANE WAS THEN CLRED FOR REVENUE SVC; SO DISPATCH KEPT US IN THE AIRPLANE FOR OUR REMAINING 3 LEGS OF THE DAY.

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.