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BAE4100 was cleared to climb and maintain visual separation with an MD80. Both aircraft experienced TCASII resolutions on the other.
| Attributes | |
| ACN | 546463 |
| Time | |
| Date | 200205 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : stl.airport |
| State Reference | MO |
| Altitude | msl bound lower : 5000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : t75.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Jetstream 41 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : t75.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 4200 flight time type : 1400 |
| ASRS Report | 546463 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : airborne critical |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | controller : issued advisory controller : separated traffic flight crew : took evasive action |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
During a 'step climb' from stl en route to evv, visual contact was established on an air carrier MD80. Clearance to climb from 5000 ft to 6000 ft was given while maintaining visual separation from the MD80. Our aircraft and the MD80 experienced TCASII RA advisories. The MD80 crew made an inquiry to ATC and was advised our aircraft was maintaining visual separation. No big deal from our point of view. The controller, however, may have thought that an 'expect' climb to 6000 ft was given. High ATC workload, desire to clear lower airspace for departures may have contributed. No aircraft maneuvering necessary, safe visual separation maintained throughout climb.
Original NASA ASRS Text
Title: BAE4100 WAS CLRED TO CLB AND MAINTAIN VISUAL SEPARATION WITH AN MD80. BOTH ACFT EXPERIENCED TCASII RESOLUTIONS ON THE OTHER.
Narrative: DURING A 'STEP CLB' FROM STL ENRTE TO EVV, VISUAL CONTACT WAS ESTABLISHED ON AN ACR MD80. CLRNC TO CLB FROM 5000 FT TO 6000 FT WAS GIVEN WHILE MAINTAINING VISUAL SEPARATION FROM THE MD80. OUR ACFT AND THE MD80 EXPERIENCED TCASII RA ADVISORIES. THE MD80 CREW MADE AN INQUIRY TO ATC AND WAS ADVISED OUR ACFT WAS MAINTAINING VISUAL SEPARATION. NO BIG DEAL FROM OUR POINT OF VIEW. THE CTLR, HOWEVER, MAY HAVE THOUGHT THAT AN 'EXPECT' CLB TO 6000 FT WAS GIVEN. HIGH ATC WORKLOAD, DESIRE TO CLR LOWER AIRSPACE FOR DEPS MAY HAVE CONTRIBUTED. NO ACFT MANEUVERING NECESSARY, SAFE VISUAL SEPARATION MAINTAINED THROUGHOUT CLB.
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.