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|
Attributes | |
ACN | 634109 |
Time | |
Date | 200410 |
Day | Mon |
Local Time Of Day | 1201 To 1800 |
Place | |
Locale Reference | airport : cvg.airport |
State Reference | KY |
Altitude | msl single value : 2500 |
Environment | |
Weather Elements | Windshear |
Light | Daylight |
Aircraft 1 | |
Controlling Facilities | tracon : cvg.tracon |
Operator | common carrier : air carrier |
Make Model Name | B737-500 |
Operating Under FAR Part | Part 121 |
Navigation In Use | ils localizer & glide slope : 36r |
Flight Phase | descent : approach |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Experience | flight time last 90 days : 200 flight time total : 13700 flight time type : 1030 |
ASRS Report | 634109 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Events | |
Anomaly | inflight encounter : weather inflight encounter other non adherence : company policies other anomaly |
Independent Detector | other flight crewa other flight crewb |
Resolutory Action | none taken : anomaly accepted |
Supplementary | |
Problem Areas | Weather Flight Crew Human Performance |
Primary Problem | Flight Crew Human Performance |
Narrative:
Initially we were vectored for an ILS approach to runway 18R. The WX was dynamic and winds were shifting from the south to the north with windshear reported on runway 18R. We broke off vectors to runway 18R and changed to fly the ILS to runway 36R. Winds for that runway were now out of the north at about 10 KTS and no reported windshear. While flying the ILS to runway 36R the aircraft encountered a windshear of about +/-20 KTS. The autoplt and autothrottles were connected and would not handle the condition so I disconnected them. There were no pgpws warnings, however this resulted in breaking out of the WX high on the approach and out of the stabilized approach criteria. Even though I was high I was reasonably on speed with 11000 ft of runway in front of me, so I elected to continue the landing. We made an uneventful landing in the first third of the runway and taxied to parking. Right from the start of the windshear I had all the clues of an unstabilized approach which should have resulted in a go around. My first officer even mentioned to me that we could go around, but I said we had plenty of runway in which to make the landing. Except for simulator training, I have never encountered these conditions on the line before. After much thought and rehashing these events the only prudent action should have been a go around. If given the same or similar circumstances I would not hesitate and go around.
Original NASA ASRS Text
Title: B737-500 CAPT EXPERIENCED SEVERE WINDSHEAR THAT THE AUTOPLT AND AUTOTHROTTLES WOULD NOT HANDLE WHILE LNDG AT CVG.
Narrative: INITIALLY WE WERE VECTORED FOR AN ILS APCH TO RWY 18R. THE WX WAS DYNAMIC AND WINDS WERE SHIFTING FROM THE S TO THE N WITH WINDSHEAR RPTED ON RWY 18R. WE BROKE OFF VECTORS TO RWY 18R AND CHANGED TO FLY THE ILS TO RWY 36R. WINDS FOR THAT RWY WERE NOW OUT OF THE N AT ABOUT 10 KTS AND NO RPTED WINDSHEAR. WHILE FLYING THE ILS TO RWY 36R THE ACFT ENCOUNTERED A WINDSHEAR OF ABOUT +/-20 KTS. THE AUTOPLT AND AUTOTHROTTLES WERE CONNECTED AND WOULD NOT HANDLE THE CONDITION SO I DISCONNECTED THEM. THERE WERE NO PGPWS WARNINGS, HOWEVER THIS RESULTED IN BREAKING OUT OF THE WX HIGH ON THE APCH AND OUT OF THE STABILIZED APCH CRITERIA. EVEN THOUGH I WAS HIGH I WAS REASONABLY ON SPD WITH 11000 FT OF RWY IN FRONT OF ME, SO I ELECTED TO CONTINUE THE LNDG. WE MADE AN UNEVENTFUL LNDG IN THE FIRST THIRD OF THE RWY AND TAXIED TO PARKING. RIGHT FROM THE START OF THE WINDSHEAR I HAD ALL THE CLUES OF AN UNSTABILIZED APCH WHICH SHOULD HAVE RESULTED IN A GAR. MY FO EVEN MENTIONED TO ME THAT WE COULD GO AROUND, BUT I SAID WE HAD PLENTY OF RWY IN WHICH TO MAKE THE LNDG. EXCEPT FOR SIMULATOR TRAINING, I HAVE NEVER ENCOUNTERED THESE CONDITIONS ON THE LINE BEFORE. AFTER MUCH THOUGHT AND REHASHING THESE EVENTS THE ONLY PRUDENT ACTION SHOULD HAVE BEEN A GAR. IF GIVEN THE SAME OR SIMILAR CIRCUMSTANCES I WOULD NOT HESITATE AND GO AROUND.
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.