A crj 700 flight crew encountered roll axis system anomalies; declared an emergency and landed witho...

Narrative:

While on descent; with spoilers deployed; a quick rolling motion was felt. This sensation was followed by two caution messages; one for outboard spoileron and the other for outboard flight spoilers. The QRH was followed and it was discovered that a longer than normal landing distance would be required. I then calculated our landing distance using the numbers found in the flight standards manual. After conferring with dispatch and maintenance it was decided that we would land on the longest runway and that just to be on the safe side we would declare an emergency. After notifying ATC; I called the flight attendants and informed them of the situation. I told them that we were expecting nothing more than a normal landing and taxi to the gate. I also informed them that I would make an announcement to the passengers to inform them of the situation and what they could expect. After all checks; announcements and procedures where complete a normal landing was conducted and the flight proceeded to the gate with out further incident.

Original NASA ASRS Text

Title: A CRJ 700 flight crew encountered roll axis system anomalies; declared an emergency and landed without incident at their destination.

Narrative: While on descent; with spoilers deployed; a quick rolling motion was felt. This sensation was followed by two Caution Messages; one for outboard spoileron and the other for outboard flight spoilers. The QRH was followed and it was discovered that a longer than normal landing distance would be required. I then calculated our landing distance using the numbers found in the Flight Standards Manual. After conferring with Dispatch and Maintenance it was decided that we would land on the longest runway and that just to be on the safe side we would declare an emergency. After notifying ATC; I called the flight attendants and informed them of the situation. I told them that we were expecting nothing more than a normal landing and taxi to the gate. I also informed them that I would make an announcement to the passengers to inform them of the situation and what they could expect. After all checks; announcements and procedures where complete a normal landing was conducted and the flight proceeded to the gate with out further incident.

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	875792
Time
Date	201002
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 700 ER/LR (CRJ700)
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	Aileron Control System
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 177 Flight Crew Total 7557 Flight Crew Type 6130
Events
Anomaly	Aircraft Equipment Problem Critical

A crj 700 flight crew encountered roll axis system anomalies; declared an emergency and landed without incident at their destination.