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First officer of B757 believes loss of separation and resulting TCAS RA with B737 during arrival to tpa was the result of TRACON controller workload working both arrs and departures.
| Attributes | |
| ACN | 715307 |
| Time | |
| Date | 200610 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : tpa.airport |
| State Reference | FL |
| Altitude | msl single value : 6600 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : tpa.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : tpa.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 170 flight time total : 10800 flight time type : 900 |
| ASRS Report | 715307 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation |
| Independent Detector | aircraft equipment : tcas other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Miss Distance | horizontal : 24000 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
On descent into tpa from 9000 ft to 5000 ft; we were told by ATC to 'stop descent and turn left heading 090 degrees.' at which point we received a TA and saw a B737 in a climbing left turn towards the west. Tpa was landing/departing runway 36L. We were descending for the downwind on vectors from approach. The controller was working both arrs and departures and was busy. I feel that was the sole factor in us receiving the TA. I am starting to see it more and more where controllers are working multiple frequencys; and are very busy. I believe the controller shortage may be here; and will probably get a lot worse!
Original NASA ASRS Text
Title: FO OF B757 BELIEVES LOSS OF SEPARATION AND RESULTING TCAS RA WITH B737 DURING ARR TO TPA WAS THE RESULT OF TRACON CTLR WORKLOAD WORKING BOTH ARRS AND DEPS.
Narrative: ON DSCNT INTO TPA FROM 9000 FT TO 5000 FT; WE WERE TOLD BY ATC TO 'STOP DSCNT AND TURN L HDG 090 DEGS.' AT WHICH POINT WE RECEIVED A TA AND SAW A B737 IN A CLBING L TURN TOWARDS THE W. TPA WAS LNDG/DEPARTING RWY 36L. WE WERE DSNDING FOR THE DOWNWIND ON VECTORS FROM APCH. THE CTLR WAS WORKING BOTH ARRS AND DEPS AND WAS BUSY. I FEEL THAT WAS THE SOLE FACTOR IN US RECEIVING THE TA. I AM STARTING TO SEE IT MORE AND MORE WHERE CTLRS ARE WORKING MULTIPLE FREQS; AND ARE VERY BUSY. I BELIEVE THE CTLR SHORTAGE MAY BE HERE; AND WILL PROBABLY GET A LOT WORSE!
Data retrieved from NASA's ASRS site as of January 2009 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.