MD80 crew lost aircraft control after encountering severe wake turbulence in las class B.

Attributes
ACN	489505
Time
Date	200010
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : las.airport
State Reference	NV
Altitude	agl single value : 1800
Environment
Light	Night
Aircraft 1
Controlling Facilities	tower : las.tower
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 25l
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : las.tower
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
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 : atp
ASRS Report	489505
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
ASRS Report	489504
Events
Anomaly	inflight encounter : wake turbulence inflight encounter : weather other anomaly
Resolutory Action	flight crew : executed go around flight crew : regained aircraft control none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Airport Weather Environmental Factor
Primary Problem	Ambiguous

Narrative:

Wake turbulence. On approach to las we experienced severe wake turbulence. The aircraft was out of control for 10-15 seconds. We firewalled the throttles and I tried to pitch up. The aircraft was rolling left and right and pitching up and down. The aircraft would not respond to control inputs. After 10-15 seconds the aircraft started to respond and we executed a missed approach and returned for landing. No passenger or crew were injured.

Original NASA ASRS Text

Title: MD80 CREW LOST ACFT CTL AFTER ENCOUNTERING SEVERE WAKE TURB IN LAS CLASS B.

Narrative: WAKE TURB. ON APCH TO LAS WE EXPERIENCED SEVERE WAKE TURB. THE ACFT WAS OUT OF CTL FOR 10-15 SECONDS. WE FIREWALLED THE THROTTLES AND I TRIED TO PITCH UP. THE ACFT WAS ROLLING L AND R AND PITCHING UP AND DOWN. THE ACFT WOULD NOT RESPOND TO CTL INPUTS. AFTER 10-15 SECONDS THE ACFT STARTED TO RESPOND AND WE EXECUTED A MISSED APCH AND RETURNED FOR LNDG. NO PAX OR CREW WERE INJURED.

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.