CL65 captain experiences uneven spoiler deployment at 7000 feet after rapidly deploying the spoilers...

Narrative:

My last clearance from new york approach was to maintain 250 KIAS; 7;000 ft; direct to dials for the expressway visual approach to runway 31. As we passed north of the verrazano narrows bridge; approaching dials; I knew we were going to be high and fast; but my first officer was unable to get a word in on the frequency. When he finally did; we were instructed to descend to 3;000 ft and slow to 180 KIAS. I essentially executed a near emergency descent (seat belt sign was already on). Upon rapidly deploying the flight spoilers; and initiating the descent; the aircraft began an un-commanded roll to the left. As I was about to disengage the auto-pilot; and assume manual control; the aircraft righted itself and continued toward dials. My first officer had immediately selected the flight control synoptic page and observed the right flight spoiler outlined in white; and pointed out to me that initially the right flight spoiler had not shown full deployment; but by the time I looked at the page the right flight spoiler was displaying full deployment. We also had a flight spoilers status message displayed. I believe the QRH said that there was a loss of redundancy in the system; so we continued in and landed uneventfully. The gld deployed advisory message posted after touchdown. After parking and deboarding; I called maintenance control; and wrote up the anomaly in the logbook. Maintenance came out and successfully reset the spoiler system.

Original NASA ASRS Text

Title: CL65 Captain experiences uneven spoiler deployment at 7000 feet after rapidly deploying the spoilers to slow and descend at ATC request. A sharp roll to the left occurs initially before the reluctant panel deploys.

Narrative: My last clearance from New York Approach was to maintain 250 KIAS; 7;000 FT; direct to DIALS for the Expressway Visual Approach to runway 31. As we passed north of the Verrazano Narrows bridge; approaching DIALS; I knew we were going to be high and fast; but my First Officer was unable to get a word in on the frequency. When he finally did; we were instructed to descend to 3;000 FT and slow to 180 KIAS. I essentially executed a near emergency descent (Seat Belt sign was already ON). Upon rapidly deploying the flight spoilers; and initiating the descent; the aircraft began an un-commanded roll to the left. As I was about to disengage the auto-pilot; and assume manual control; the aircraft righted itself and continued toward DIALS. My First Officer had immediately selected the Flight Control synoptic page and observed the right flight spoiler outlined in white; and pointed out to me that initially the right flight spoiler had not shown full deployment; but by the time I looked at the page the right flight spoiler was displaying full deployment. We also had a FLT SPOILERS status message displayed. I believe the QRH said that there was a loss of redundancy in the system; so we continued in and landed uneventfully. The GLD Deployed advisory message posted after touchdown. After parking and deboarding; I called Maintenance Control; and wrote up the anomaly in the logbook. Maintenance came out and successfully reset the spoiler system.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	866770
Time
Date	200912
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet CL65 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Component
Aircraft Component	Spoiler System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 8060 Flight Crew Type 6300
Events
Anomaly	Aircraft Equipment Problem Less Severe

CL65 captain experiences uneven spoiler deployment at 7000 feet after rapidly deploying the spoilers to slow and descend at ATC request. A sharp roll to the left occurs initially before the reluctant panel deploys.