Super 80 has LLWS alert on approach. On missed approach encounters windshear resulting in inability ...

Attributes
ACN	325750
Time
Date	199601
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : aus airport : dfw
State Reference	TX
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent : approach other other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	325750
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : declared emergency other other
Consequence	Other
Supplementary
Primary Problem	Weather

Narrative:

We were cleared to dfw via the blue ridge arrival. We held at conny intersection for approximately 20 mins and were cleared to resume the arrival to dfw. While being vectored to the approach for runway 17L we noted a line of severe thunderstorms approaching from the northwest. On visual approach to runway 17L, inside the marker, on tower frequency we received a LLWS alert from dfw tower. Winds rapidly increased and were in excess of limits for the S80 aircraft. We initiated a go around. Tower instructed us to climb to 3000 ft on a 150 degree heading. We were told to contact departure on 118.55. Passing 1000 ft AGL we encountered a severe windshear with an increase of 50 KTS in airspeed and an unsolicited climb of 3000 FPM. We were unable to stop the climb at 3000 ft. The copilot informed ATC we were unable to level at 3000 ft due to windshear and we were given a climb clearance to 6000 ft. This was a classic case of windshear in front of an approaching storm. We only encountered the updraft and increase in airspeed. Thanks to simulator training we were able to recognize and escape the danger. We were informed dfw had closed. Dal was not considered a viable alternate due to the rapid movement of the storms. We immediately requested vectors to aus. Several other aircraft were diverting to aus at the same time. We sent an ACARS message that we were diverting to aus and entered aus as the destination in the ACARS. We experienced higher than normal fuel burn en route to aus due to vectors combined with a lower cruise altitude for traffic, WX, and a headwind in excess of 70 KTS. Approximately 65 mi from aus with 4000 pounds of fuel remaining, we declared minimum fuel. We were given vectors direct to the OM for runway 13R. On final for runway 13R, the winds changed and exceeded our limits. We requested and received a circle-to-land runway 31L. Touchdown fuel was 2400 pounds.

Original NASA ASRS Text

Title: SUPER 80 HAS LLWS ALERT ON APCH. ON MISSED APCH ENCOUNTERS WINDSHEAR RESULTING IN INABILITY TO MAINTAIN ALT. DIVERTS TO AUS, ENCOUNTERS SEVERE HEADWINDS, DECLARES EMER DUE TO LOW FUEL STATE.

Narrative: WE WERE CLRED TO DFW VIA THE BLUE RIDGE ARR. WE HELD AT CONNY INTXN FOR APPROX 20 MINS AND WERE CLRED TO RESUME THE ARR TO DFW. WHILE BEING VECTORED TO THE APCH FOR RWY 17L WE NOTED A LINE OF SEVERE TSTMS APCHING FROM THE NW. ON VISUAL APCH TO RWY 17L, INSIDE THE MARKER, ON TWR FREQ WE RECEIVED A LLWS ALERT FROM DFW TWR. WINDS RAPIDLY INCREASED AND WERE IN EXCESS OF LIMITS FOR THE S80 ACFT. WE INITIATED A GAR. TWR INSTRUCTED US TO CLB TO 3000 FT ON A 150 DEG HDG. WE WERE TOLD TO CONTACT DEP ON 118.55. PASSING 1000 FT AGL WE ENCOUNTERED A SEVERE WINDSHEAR WITH AN INCREASE OF 50 KTS IN AIRSPD AND AN UNSOLICITED CLB OF 3000 FPM. WE WERE UNABLE TO STOP THE CLB AT 3000 FT. THE COPLT INFORMED ATC WE WERE UNABLE TO LEVEL AT 3000 FT DUE TO WINDSHEAR AND WE WERE GIVEN A CLB CLRNC TO 6000 FT. THIS WAS A CLASSIC CASE OF WINDSHEAR IN FRONT OF AN APCHING STORM. WE ONLY ENCOUNTERED THE UPDRAFT AND INCREASE IN AIRSPD. THANKS TO SIMULATOR TRAINING WE WERE ABLE TO RECOGNIZE AND ESCAPE THE DANGER. WE WERE INFORMED DFW HAD CLOSED. DAL WAS NOT CONSIDERED A VIABLE ALTERNATE DUE TO THE RAPID MOVEMENT OF THE STORMS. WE IMMEDIATELY REQUESTED VECTORS TO AUS. SEVERAL OTHER ACFT WERE DIVERTING TO AUS AT THE SAME TIME. WE SENT AN ACARS MESSAGE THAT WE WERE DIVERTING TO AUS AND ENTERED AUS AS THE DEST IN THE ACARS. WE EXPERIENCED HIGHER THAN NORMAL FUEL BURN ENRTE TO AUS DUE TO VECTORS COMBINED WITH A LOWER CRUISE ALT FOR TFC, WX, AND A HEADWIND IN EXCESS OF 70 KTS. APPROX 65 MI FROM AUS WITH 4000 LBS OF FUEL REMAINING, WE DECLARED MINIMUM FUEL. WE WERE GIVEN VECTORS DIRECT TO THE OM FOR RWY 13R. ON FINAL FOR RWY 13R, THE WINDS CHANGED AND EXCEEDED OUR LIMITS. WE REQUESTED AND RECEIVED A CIRCLE-TO-LAND RWY 31L. TOUCHDOWN FUEL WAS 2400 LBS.

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.

Super 80 has LLWS alert on approach. On missed approach encounters windshear resulting in inability to maintain altitude. Diverts to aus, encounters severe headwinds, declares emergency due to low fuel state.