Narrative:

Upon descent; the first officer (pilot flying) extended the flight spoilers. Moments after extending the spoilers; the flight crew recognized the aircraft entered an uncommanded roll. This was followed by two caution messages: outboard (ob) spoilerons; ob flight spoilers.captain handled QRH and determined to extend landing distance by 25% and land on longest runway. [Priority handling was requested]; flight attendants briefed; passengers informed; dispatcher notified; and flight crew advised ATC to have emergency vehicles standing by. After a beautiful landing performed by the first officer; the flight crew terminated the [priority with ATC] and continued to the assigned gate. Flight arrived at the planned gate without any injuries or aircraft damage. Maintenance was notified and they directed the captain to perform a circuit breaker reset to fix a PCU jam. Once completed aircraft was returned back to service.cause- ob spoilerons; ob flight spoilers caution messages in flight.suggestion- properly maintain the spoiler pcus so they don't jam.

Related reports:

Google
 

Original NASA ASRS Text

Title: CRJ-900 Captain reported an outboard spoilers malfunction that caused an uncommanded roll; QRH procedures were followed and aircraft made a successful landing.

Narrative: Upon descent; the First Officer (pilot flying) extended the flight spoilers. Moments after extending the spoilers; the flight crew recognized the aircraft entered an uncommanded roll. This was followed by two caution messages: OUTBOARD (OB) SPOILERONS; OB FLT SPOILERS.Captain handled QRH and determined to extend landing distance by 25% and land on longest runway. [Priority handling was requested]; flight attendants briefed; passengers informed; dispatcher notified; and flight crew advised ATC to have emergency vehicles standing by. After a beautiful landing performed by the First Officer; the flight crew terminated the [priority with ATC] and continued to the assigned gate. Flight arrived at the planned gate without any injuries or aircraft damage. Maintenance was notified and they directed the Captain to perform a circuit breaker reset to fix a PCU jam. Once completed aircraft was returned back to service.Cause- OB SPOILERONS; OB FLT SPOILERS caution messages in flight.Suggestion- Properly maintain the spoiler PCUs so they don't jam.

Data retrieved from NASA's ASRS site 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.