Wake turbulence encounter on the ILS.

Attributes
ACN	281098
Time
Date	199408
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 1400 msl bound upper : 1500
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	approach : straight in
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	approach : straight in
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	281098
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	inflight encounter other non adherence : published procedure other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : exited adverse environment flight crew : regained aircraft control
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On final runway 27R ord 3-4 mi behind another 757. Wind calm on glide path. Aircraft encountered rapid roll rate with no turbulence. Started to go around when air smoothed out. At about 1500 ft continued approach. Landing normal.

Original NASA ASRS Text

Title: WAKE TURB ENCOUNTER ON THE ILS.

Narrative: ON FINAL RWY 27R ORD 3-4 MI BEHIND ANOTHER 757. WIND CALM ON GLIDE PATH. ACFT ENCOUNTERED RAPID ROLL RATE WITH NO TURB. STARTED TO GAR WHEN AIR SMOOTHED OUT. AT ABOUT 1500 FT CONTINUED APCH. LNDG NORMAL.

Data retrieved from NASA's ASRS site as of July 2007 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.