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Violent wind shear caused flight crew of an large transport air carrier aircraft shooting a CAT ii ILS approach to miss and be unable to control the aircraft altitude during the missed approach procedure.
| Attributes | |
| ACN | 251602 |
| Time | |
| Date | 199309 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 1000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach landing : missed approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 230 flight time total : 4000 flight time type : 230 |
| ASRS Report | 251602 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : undershoot inflight encounter : weather non adherence : published procedure other anomaly |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : exited adverse environment flight crew : regained aircraft control other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
While flying a CAT ii ILS approach to runway 17L at dfw, we encountered heavy rain, lightning, turbulence, and wind shear. I initiated a go around using full power at approximately 900 ft. Due to the windshear we were pushed below glide path with full maximum power. When we finally passed through the storm we were unable to hold any given altitude. Missed approach altitude was 3300 ft. We initially went below that and then climbed through the storm to 6000 ft. Diverted to dallas love field.
Original NASA ASRS Text
Title: VIOLENT WIND SHEAR CAUSED FLC OF AN LGT ACR ACFT SHOOTING A CAT II ILS APCH TO MISS AND BE UNABLE TO CTL THE ACFT ALT DURING THE MISSED APCH PROC.
Narrative: WHILE FLYING A CAT II ILS APCH TO RWY 17L AT DFW, WE ENCOUNTERED HVY RAIN, LIGHTNING, TURB, AND WIND SHEAR. I INITIATED A GAR USING FULL PWR AT APPROX 900 FT. DUE TO THE WINDSHEAR WE WERE PUSHED BELOW GLIDE PATH WITH FULL MAX PWR. WHEN WE FINALLY PASSED THROUGH THE STORM WE WERE UNABLE TO HOLD ANY GIVEN ALT. MISSED APCH ALT WAS 3300 FT. WE INITIALLY WENT BELOW THAT AND THEN CLBED THROUGH THE STORM TO 6000 FT. DIVERTED TO DALLAS LOVE FIELD.
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.