A crj-200 flight crew reported encountering significant wake turbulence in trail behind a B757 on ar...

Narrative:

On canuk arrival [to atl]; 14;000 ft; outside of bojaa [we] encountered heavy wake turbulence from a 757 we were following. Aircraft was continually rolling to the left approx 20-30 degrees. I asked ATC for 5-10 degrees left for wake turbulence (upwind - was a slight crosswind left to right according to info on pfd). [We were] given instructions to slow from 300 KIAS to 250 KIAS and that we were 7 miles in trail. Wake turbulence was getting worse during the time we were getting these instructions so I immediately requested 5-10 degrees left again. ATC went on a rant how we were now 8 miles in trail and 80 KIAS slower. While this transmission from the controller was still going on; the wake turbulence was getting even worse; so I instructed the first officer to turn left 5-10 degrees and he did. The wake turbulence then subsided and within 10-20 seconds the controller queried if we were on the arrival; I replied; 'we turned 5 degrees left for wake turbulence.' the controller asked if we were able to return direct bojaa and replied affirmative. The flight continued to landing without further event.

Original NASA ASRS Text

Title: A CRJ-200 flight crew reported encountering significant wake turbulence in trail behind a B757 on arrival to ATL. They took evasive action and were criticized by ATC for doing so.

Narrative: On CANUK Arrival [to ATL]; 14;000 FT; outside of BOJAA [we] encountered heavy wake turbulence from a 757 we were following. Aircraft was continually rolling to the left approx 20-30 degrees. I asked ATC for 5-10 degrees left for wake turbulence (upwind - was a slight crosswind left to right according to info on PFD). [We were] given instructions to slow from 300 KIAS to 250 KIAS and that we were 7 miles in trail. Wake turbulence was getting worse during the time we were getting these instructions so I immediately requested 5-10 degrees left again. ATC went on a rant how we were now 8 miles in trail and 80 KIAS slower. While this transmission from the Controller was still going on; the wake turbulence was getting even worse; so I instructed the First Officer to turn left 5-10 degrees and he did. The wake turbulence then subsided and within 10-20 seconds the Controller queried if we were on the arrival; I replied; 'We turned 5 degrees left for wake turbulence.' The Controller asked if we were able to return direct BOJAA and replied affirmative. The flight continued to landing without further event.

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	977861
Time
Date	201111
Local Time Of Day	1201-1800
Place
Locale Reference	ATL.Airport
State Reference	GA
Environment
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Descent
Route In Use	STAR CANUK
Flight Plan	IFR
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Flying First Officer
Events
Anomaly	ATC Issue All Types Inflight Event / Encounter Wake Vortex Encounter

A crj-200 flight crew reported encountering significant wake turbulence in trail behind a B757 on arrival to atl. They took evasive action and were criticized by ATC for doing so.