Pilot of MD88 aircraft, 2 pt 5 mi in-trail of B737-800 aircraft, encounters wake turbulence.

Attributes
ACN	437603
Time
Date	199905
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	msl single value : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dfw.tower
Operator	common carrier : air carrier
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 17c other
Flight Phase	descent : approach
Route In Use	approach : instrument precision approach : visual
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : dfw.tower
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 17c other
Flight Phase	descent : approach
Route In Use	approach : visual approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 250 flight time total : 14000 flight time type : 2500
ASRS Report	437603
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Events
Anomaly	conflict : airborne less severe inflight encounter : wake turbulence
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Environmental Factor Flight Crew Human Performance Airport ATC Human Performance
Primary Problem	Ambiguous

Narrative:

During visual approach following B737 to airport encountered significant roll due to wake turbulence. Aircraft approximately 2 1/2 mi ahead. Large aileron and rudder inputs needed to stop roll and right aircraft. This event has demonstrated to me a need for increased separation following the new generation B737's.

Original NASA ASRS Text

Title: PLT OF MD88 ACFT, 2 PT 5 MI IN-TRAIL OF B737-800 ACFT, ENCOUNTERS WAKE TURB.

Narrative: DURING VISUAL APCH FOLLOWING B737 TO ARPT ENCOUNTERED SIGNIFICANT ROLL DUE TO WAKE TURB. ACFT APPROX 2 1/2 MI AHEAD. LARGE AILERON AND RUDDER INPUTS NEEDED TO STOP ROLL AND RIGHT ACFT. THIS EVENT HAS DEMONSTRATED TO ME A NEED FOR INCREASED SEPARATION FOLLOWING THE NEW GENERATION B737'S.

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.