Crj-900 first officer reported encountering wake turbulence on descent into ord in trail of an A330.

Attributes
ACN	1456472
Time
Date	201706
Local Time Of Day	0601-1200
Place
Locale Reference	ORD.Airport
State Reference	IL
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 900 (CRJ900)
Operating Under FAR Part	Part 121
Flight Phase	Descent
Route In Use	STAR WYNDE 8
Flight Plan	IFR
Aircraft 2
Make Model Name	A330
Flight Phase	Descent
Route In Use	STAR WYNDE 8
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Inflight Event / Encounter Wake Vortex Encounter

Narrative:

While on the descent into ord on the wynde 8 arrival; we encountered wake turbulence between paitn and wynde fix. While on autopilot the aircraft rolled to the left then to the right. I disconnected the autopilot and assumed manual control. The aircraft rolled again left and then right. I called for 'ignition continuous' then; I asked the captain 'what we were following?' he questioned ATC; ATC replied 'an airbus A330.' the captain told ATC that we encountered wake turbulence. At that time the captain and I noticed the separation between the airbus and our aircraft was less than ten miles. ATC then gave us vectors [and] while on that vector we encountered additional wake turbulence. Once we were out of the wake turbulence; the captain called the flight attendants to ask if [everyone] was okay; and they said no one was injured. The flight attendants did make an announcement regarding this situation after speaking with the captain. We continued the approach and landed safely with no further issues.

Original NASA ASRS Text

Title: CRJ-900 First Officer reported encountering wake turbulence on descent into ORD in trail of an A330.

Narrative: While on the descent into ORD on the WYNDE 8 arrival; we encountered wake turbulence between PAITN and WYNDE fix. While on autopilot the aircraft rolled to the left then to the right. I disconnected the autopilot and assumed manual control. The aircraft rolled again left and then right. I called for 'ignition continuous' then; I asked the Captain 'what we were following?' He questioned ATC; ATC replied 'an Airbus A330.' The Captain told ATC that we encountered wake turbulence. At that time the Captain and I noticed the separation between the Airbus and our aircraft was less than ten miles. ATC then gave us vectors [and] while on that vector we encountered additional wake turbulence. Once we were out of the wake turbulence; the Captain called the flight attendants to ask if [everyone] was okay; and they said no one was injured. The flight attendants did make an announcement regarding this situation after speaking with the Captain. We continued the approach and landed safely with no further issues.

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.