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Potential conflict occurs when one air carrier aircraft suffers loss of aircraft control in proximity of thunderstorm activity.
| Attributes | |
| ACN | 273799 |
| Time | |
| Date | 199406 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mem |
| State Reference | TN |
| Altitude | msl bound lower : 4000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mem |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 140 flight time total : 18000 flight time type : 2600 |
| ASRS Report | 273799 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe inflight encounter : weather non adherence : clearance other anomaly other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : regained aircraft control flight crew : took evasive action |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
While being vectored for ILS 18R approach into memphis airport, approach was abandoned about 10 mi out due to severe thunderstorms at the airport. Vectored west toward large WX buildup. Approaching the edge of the severe WX we heard another aircraft report he was unable to hold altitude due to turbulence. Shortly thereafter we observed a TCASII RA 'monitor vertical speed.' noted traffic on TCASII about 2-3 mi to left front and 300 ft below. RA indicated a pushover. We descended at about 2000 FPM to 4000 ft then climbed back to 5000 ft. Do not know how close we came to traffic.
Original NASA ASRS Text
Title: POTENTIAL CONFLICT OCCURS WHEN ONE ACR ACFT SUFFERS LOSS OF ACFT CTL IN PROX OF TSTM ACTIVITY.
Narrative: WHILE BEING VECTORED FOR ILS 18R APCH INTO MEMPHIS ARPT, APCH WAS ABANDONED ABOUT 10 MI OUT DUE TO SEVERE TSTMS AT THE ARPT. VECTORED W TOWARD LARGE WX BUILDUP. APCHING THE EDGE OF THE SEVERE WX WE HEARD ANOTHER ACFT RPT HE WAS UNABLE TO HOLD ALT DUE TO TURB. SHORTLY THEREAFTER WE OBSERVED A TCASII RA 'MONITOR VERT SPD.' NOTED TFC ON TCASII ABOUT 2-3 MI TO L FRONT AND 300 FT BELOW. RA INDICATED A PUSHOVER. WE DSNDED AT ABOUT 2000 FPM TO 4000 FT THEN CLBED BACK TO 5000 FT. DO NOT KNOW HOW CLOSE WE CAME TO TFC.
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.