Wake turbulence encounter during approach into dfw, runway 35R.

Attributes
ACN	313831
Time
Date	199508
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	msl bound lower : 1900 msl bound upper : 2800
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tower : dfw
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) 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
Qualification	pilot : instrument pilot : atp pilot : cfi pilot : commercial
Experience	flight time last 90 days : 200 flight time total : 11000 flight time type : 3200
ASRS Report	313831
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	inflight encounter other
Independent Detector	other flight crewa
Resolutory Action	flight crew : regained aircraft control flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

On approach to runway 35R at dfw. Turning final about 10 mi out, 3 mi in trail of a company S80. Got 3 left and right jolts of about 10-15 degrees of wing rock. TCASII showed MD80 at 3 mi ahead and on descent to the runway. I know NASA was looking for reports such as this. Callback conversation with reporter revealed the following information: reporter participated in the wake turbulence structured callback program. Reporter filled in all the appropriate blanks to help paint a more accurate picture of the event encountered. Reporter stated it occurred at dusk, with calm winds and clear visibility. Preceding aircraft was same type aircraft as his and only 3 mi ahead. Reporter was surprised at the rocking that happened when aircraft hit the wake. With addition of some power and aileron application, the banking stopped. Total time of incident was estimated to be 5-6 seconds. Reporter took a preventative action against further turbulence by flying 1/2 DOT high on the GS. No further turbulence was encountered.

Original NASA ASRS Text

Title: WAKE TURB ENCOUNTER DURING APCH INTO DFW, RWY 35R.

Narrative: ON APCH TO RWY 35R AT DFW. TURNING FINAL ABOUT 10 MI OUT, 3 MI IN TRAIL OF A COMPANY S80. GOT 3 L AND R JOLTS OF ABOUT 10-15 DEGS OF WING ROCK. TCASII SHOWED MD80 AT 3 MI AHEAD AND ON DSCNT TO THE RWY. I KNOW NASA WAS LOOKING FOR RPTS SUCH AS THIS. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING INFO: RPTR PARTICIPATED IN THE WAKE TURB STRUCTURED CALLBACK PROGRAM. RPTR FILLED IN ALL THE APPROPRIATE BLANKS TO HELP PAINT A MORE ACCURATE PICTURE OF THE EVENT ENCOUNTERED. RPTR STATED IT OCCURRED AT DUSK, WITH CALM WINDS AND CLR VISIBILITY. PRECEDING ACFT WAS SAME TYPE ACFT AS HIS AND ONLY 3 MI AHEAD. RPTR WAS SURPRISED AT THE ROCKING THAT HAPPENED WHEN ACFT HIT THE WAKE. WITH ADDITION OF SOME PWR AND AILERON APPLICATION, THE BANKING STOPPED. TOTAL TIME OF INCIDENT WAS ESTIMATED TO BE 5-6 SECONDS. RPTR TOOK A PREVENTATIVE ACTION AGAINST FURTHER TURB BY FLYING 1/2 DOT HIGH ON THE GS. NO FURTHER TURB WAS ENCOUNTERED.

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.