On pullman arrival to ord; B737-300 encounters wake turbulence in trail of B777 8 mi ahead.

Attributes
ACN	718093
Time
Date	200611
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl single value : 8000
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	arrival star : pullman
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : c90.tracon
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 250
ASRS Report	718093
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	inflight encounter : wake turbulence
Resolutory Action	controller : issued new clearance other
Supplementary
Problem Areas	Aircraft Environmental Factor
Primary Problem	Environmental Factor

Narrative:

On arrival PMM5 into ord we hit wake turbulence from aircraft 8 mi in front of us. Aircraft rolled 30 degrees left and then back to right. Advised ATC and we were given speed reduction to 210 KTS and then told behind a heavy B777. That was first we heard about B777. Winds at altitude were 265 degrees/28 KTS on arrival path.

Original NASA ASRS Text

Title: ON PULLMAN ARR TO ORD; B737-300 ENCOUNTERS WAKE TURB IN TRAIL OF B777 8 MI AHEAD.

Narrative: ON ARR PMM5 INTO ORD WE HIT WAKE TURB FROM ACFT 8 MI IN FRONT OF US. ACFT ROLLED 30 DEGS L AND THEN BACK TO R. ADVISED ATC AND WE WERE GIVEN SPD REDUCTION TO 210 KTS AND THEN TOLD BEHIND A HVY B777. THAT WAS FIRST WE HEARD ABOUT B777. WINDS AT ALT WERE 265 DEGS/28 KTS ON ARR PATH.

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.