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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Flight crew of a B737-300 stopped their descent and climbed in response to sighting another aircraft climbing in a turn toward their flight path and a TCASII RA to climb.
| Attributes | |
| ACN | 464773 |
| Time | |
| Date | 200002 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : atl.vortac |
| State Reference | GA |
| Altitude | msl bound lower : 10700 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl.tracon artcc : zjx.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-83 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | descent : vacating altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : atl.tracon |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : vacating altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : private pilot : flight engineer pilot : instrument pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 3600 flight time type : 120 |
| ASRS Report | 464773 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : commercial pilot : flight engineer pilot : instrument pilot : multi engine pilot : private pilot : atp |
| Experience | flight time last 90 days : 300 flight time total : 14500 flight time type : 500 |
| ASRS Report | 464693 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne critical non adherence : required legal separation |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | controller : separated traffic flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 1000 vertical : 0 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Inbound to atl on a heading of approximately 190 degrees we were given a descent to 10000 ft MSL. As we approached 11000 ft on the way down, we visually acquired an aircraft at 12 - 1 O'clock position in a climbing turn toward us. When we received an RA, we leveled off at 11000 ft and notified ATC. We were then directed to level off at 11000 ft and turn left to 090 degrees (right downwind for runway 27R). After our acknowledgement, the controller asked 'I did say 11000 ft, correct?' we replied 'affirmative.' we were later unclr if he was inquiring about the avoidance maneuver or the initial clearance. At any rate, during our avoidance maneuver the other aircraft leveled off at 10000 ft and would have been a direct conflict. The remainder of the flight was uneventful.
Original NASA ASRS Text
Title: FLC OF A B737-300 STOPPED THEIR DSCNT AND CLBED IN RESPONSE TO SIGHTING ANOTHER ACFT CLBING IN A TURN TOWARD THEIR FLT PATH AND A TCASII RA TO CLB.
Narrative: INBOUND TO ATL ON A HDG OF APPROX 190 DEGS WE WERE GIVEN A DSCNT TO 10000 FT MSL. AS WE APCHED 11000 FT ON THE WAY DOWN, WE VISUALLY ACQUIRED AN ACFT AT 12 - 1 O'CLOCK POS IN A CLBING TURN TOWARD US. WHEN WE RECEIVED AN RA, WE LEVELED OFF AT 11000 FT AND NOTIFIED ATC. WE WERE THEN DIRECTED TO LEVEL OFF AT 11000 FT AND TURN L TO 090 DEGS (R DOWNWIND FOR RWY 27R). AFTER OUR ACKNOWLEDGEMENT, THE CTLR ASKED 'I DID SAY 11000 FT, CORRECT?' WE REPLIED 'AFFIRMATIVE.' WE WERE LATER UNCLR IF HE WAS INQUIRING ABOUT THE AVOIDANCE MANEUVER OR THE INITIAL CLRNC. AT ANY RATE, DURING OUR AVOIDANCE MANEUVER THE OTHER ACFT LEVELED OFF AT 10000 FT AND WOULD HAVE BEEN A DIRECT CONFLICT. THE REMAINDER OF THE FLT WAS UNEVENTFUL.
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.