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Windshear encounter and go around during approach when another aircraft, on approach ahead, also executed a go around due to the windshear. Because of the rapidly shifting winds and multiple aircraft in go around mode, reporter aircraft received TCASII RA during the recovery go around. Difficult situation when recovering from windshear, following a TCASII RA and following departure controller instructions.
| Attributes | |
| ACN | 334121 |
| Time | |
| Date | 199604 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : cvg |
| State Reference | OH |
| Altitude | msl bound lower : 3000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : cvg |
| Operator | common carrier : air carrier |
| Make Model Name | Challenger CL604 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing : go around |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach landing : go around |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 280 flight time total : 11000 flight time type : 2500 |
| ASRS Report | 334121 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 3000 vertical : 200 |
| Supplementary | |
| Primary Problem | Weather |
Narrative:
After holding at milan we were cleared to cvg and contacted cvg approach. Cleared ILS runway 18R. Turbulence moderate to severe in frontal activity. Very dynamic air mass. Tower broadcast windshear reports from aircraft preceding us, and prior to the OM after having configured the crew elected to go missed approach. During the missed approach the frequency was congested due to at least the two aircraft who were going missed. As we were being issued miss instructions we encountered windshear with airspeed fluctuations approaching 45 KTS. As we began a windshear recovery procedure we got a TCASII RA initially calling for a monitor vertical speed and then changing to a climb. We followed the TCASII RA and when resolution was completed informed controller and were issued a turn to 090 degrees and a climb to 4000 ft. The flight then diverted to day and landed uneventfully. Contributing factors were a very dynamic WX situation which was compounded by the windshear dynamics. As we were in our windshear recovery our airspeed eventually increased rapidly, more separation horizontally during WX conditions like this may have aided. Also, the workload is very high when doing windshear recovery, TCASII RA, and controller's instructions all at the same time. Saturation from all these audio inputs at once was a lot. Cockpit coordination was excellent! Decision to go missed appropriate. TCASII RA was followed in a coordinated manner.
Original NASA ASRS Text
Title: WINDSHEAR ENCOUNTER AND GAR DURING APCH WHEN ANOTHER ACFT, ON APCH AHEAD, ALSO EXECUTED A GAR DUE TO THE WINDSHEAR. BECAUSE OF THE RAPIDLY SHIFTING WINDS AND MULTIPLE ACFT IN GAR MODE, RPTR ACFT RECEIVED TCASII RA DURING THE RECOVERY GAR. DIFFICULT SIT WHEN RECOVERING FROM WINDSHEAR, FOLLOWING A TCASII RA AND FOLLOWING DEP CTLR INSTRUCTIONS.
Narrative: AFTER HOLDING AT MILAN WE WERE CLRED TO CVG AND CONTACTED CVG APCH. CLRED ILS RWY 18R. TURB MODERATE TO SEVERE IN FRONTAL ACTIVITY. VERY DYNAMIC AIR MASS. TWR BROADCAST WINDSHEAR RPTS FROM ACFT PRECEDING US, AND PRIOR TO THE OM AFTER HAVING CONFIGURED THE CREW ELECTED TO GO MISSED APCH. DURING THE MISSED APCH THE FREQ WAS CONGESTED DUE TO AT LEAST THE TWO ACFT WHO WERE GOING MISSED. AS WE WERE BEING ISSUED MISS INSTRUCTIONS WE ENCOUNTERED WINDSHEAR WITH AIRSPD FLUCTUATIONS APCHING 45 KTS. AS WE BEGAN A WINDSHEAR RECOVERY PROC WE GOT A TCASII RA INITIALLY CALLING FOR A MONITOR VERT SPD AND THEN CHANGING TO A CLB. WE FOLLOWED THE TCASII RA AND WHEN RESOLUTION WAS COMPLETED INFORMED CTLR AND WERE ISSUED A TURN TO 090 DEGS AND A CLB TO 4000 FT. THE FLT THEN DIVERTED TO DAY AND LANDED UNEVENTFULLY. CONTRIBUTING FACTORS WERE A VERY DYNAMIC WX SIT WHICH WAS COMPOUNDED BY THE WINDSHEAR DYNAMICS. AS WE WERE IN OUR WINDSHEAR RECOVERY OUR AIRSPD EVENTUALLY INCREASED RAPIDLY, MORE SEPARATION HORIZONTALLY DURING WX CONDITIONS LIKE THIS MAY HAVE AIDED. ALSO, THE WORKLOAD IS VERY HIGH WHEN DOING WINDSHEAR RECOVERY, TCASII RA, AND CTLR'S INSTRUCTIONS ALL AT THE SAME TIME. SATURATION FROM ALL THESE AUDIO INPUTS AT ONCE WAS A LOT. COCKPIT COORD WAS EXCELLENT! DECISION TO GO MISSED APPROPRIATE. TCASII RA WAS FOLLOWED IN A COORDINATED MANNER.
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.