B737 loss of aircraft control due to wake turbulence from B757.

Attributes
ACN	271187
Time
Date	199405
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : atl
State Reference	GA
Altitude	agl bound lower : 100 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : atl
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	descent : approach landing : go around
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
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 18000 flight time type : 1000
ASRS Report	271187
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	inflight encounter other other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : regained aircraft control other
Consequence	Other
Miss Distance	horizontal : 18000 vertical : 0
Supplementary
Air Traffic Incident	other

Narrative:

While on coupled approach into runway 8L atlanta, experience wake turbulence from 757 sufficient to roll my 737 to 40 degrees bank -- separation was approximately 3 mi -- upon crossing 'fence' (approach end of runway) experienced wake turbulence again and executed missed approach at approximately 100 ft. 757 had landed with approximately 3 mi separation. Wind was 090/10 KTS. After first encounter, localizer and GS were recaptured and aircraft slowed down in effort to increase separation.

Original NASA ASRS Text

Title: B737 LOSS OF ACFT CTL DUE TO WAKE TURB FROM B757.

Narrative: WHILE ON COUPLED APCH INTO RWY 8L ATLANTA, EXPERIENCE WAKE TURB FROM 757 SUFFICIENT TO ROLL MY 737 TO 40 DEGS BANK -- SEPARATION WAS APPROX 3 MI -- UPON XING 'FENCE' (APCH END OF RWY) EXPERIENCED WAKE TURB AGAIN AND EXECUTED MISSED APCH AT APPROX 100 FT. 757 HAD LANDED WITH APPROX 3 MI SEPARATION. WIND WAS 090/10 KTS. AFTER FIRST ENCOUNTER, LOC AND GS WERE RECAPTURED AND ACFT SLOWED DOWN IN EFFORT TO INCREASE SEPARATION.

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.