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DC9 PIC performs a missed approach as he recognized a low level windshear affecting his airspeed and tower controller issued a microburst alert. Aircraft was making an ILS approach near a line of thunderstorms.
| Attributes | |
| ACN | 369759 |
| Time | |
| Date | 199705 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : mem |
| State Reference | TN |
| Altitude | agl bound lower : 500 agl bound upper : 500 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : mem |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing : missed approach |
| Route In Use | approach : visual arrival other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 200 flight time total : 25000 flight time type : 12000 |
| ASRS Report | 369759 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | inflight encounter : weather inflight encounter other other anomaly other anomaly other |
| Independent Detector | atc equipment other atc equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : exited adverse environment other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | other |
Narrative:
Heavy thunderstorms passed through mem airport. We initiated an ILS to runway 18R after cleared for a visual approach. Thunderstorm line on radar in aircraft was 4 or 5 mi south of airport moving south and east. By the time we descended to 500 ft AGL the flanking side of the line of thunderstorms had developed a tail of storms that we watched visually come up from the south of mem very rapidly to obscure our visual approach. That a visual approach and landing was no longer possible combined with 2 quickly transmitted microburst alerts broadcast from the tower and an almost simultaneous 15 KT performance increasing airspeed change caused us to initiate a missed approach as depicted and amended by memphis tower. Another aircraft was approaching mem visually to runway 27 and also initiated a missed approach.
Original NASA ASRS Text
Title: DC9 PIC PERFORMS A MISSED APCH AS HE RECOGNIZED A LOW LEVEL WINDSHEAR AFFECTING HIS AIRSPD AND TWR CTLR ISSUED A MICROBURST ALERT. ACFT WAS MAKING AN ILS APCH NEAR A LINE OF TSTMS.
Narrative: HVY TSTMS PASSED THROUGH MEM ARPT. WE INITIATED AN ILS TO RWY 18R AFTER CLRED FOR A VISUAL APCH. TSTM LINE ON RADAR IN ACFT WAS 4 OR 5 MI S OF ARPT MOVING S AND E. BY THE TIME WE DSNDED TO 500 FT AGL THE FLANKING SIDE OF THE LINE OF TSTMS HAD DEVELOPED A TAIL OF STORMS THAT WE WATCHED VISUALLY COME UP FROM THE S OF MEM VERY RAPIDLY TO OBSCURE OUR VISUAL APCH. THAT A VISUAL APCH AND LNDG WAS NO LONGER POSSIBLE COMBINED WITH 2 QUICKLY XMITTED MICROBURST ALERTS BROADCAST FROM THE TWR AND AN ALMOST SIMULTANEOUS 15 KT PERFORMANCE INCREASING AIRSPD CHANGE CAUSED US TO INITIATE A MISSED APCH AS DEPICTED AND AMENDED BY MEMPHIS TWR. ANOTHER ACFT WAS APCHING MEM VISUALLY TO RWY 27 AND ALSO INITIATED A MISSED APCH.
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.