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Air carrier medium large transport cleared for descent to occupied altitude resulting in near midair collision.
| Attributes | |
| ACN | 225401 |
| Time | |
| Date | 199210 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : mci |
| State Reference | MO |
| Altitude | msl bound lower : 3800 msl bound upper : 3800 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : mci |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 15000 flight time type : 10000 |
| ASRS Report | 225401 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : nmac |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | vertical : 400 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
No TCASII. Cleared from 7000 ft to 3000 ft for descent. At 3800 ft in descent, controller said 'XXX, maintain 5000 ft.' then he said 'climb back to 5000 ft and right turn to 360 degrees.' thereafter starting climb and turning north, we were told to 'descend immediately to 3000 ft.' these commands were given in a very frantic tone of voice. Called ATC on telephone later and was told we missed other traffic by 400 ft. I think the controller just made a human error type of mistake and cleared us to the same altitude as the other airliner departing on runway 1 at mci.
Original NASA ASRS Text
Title: ACR MLG CLRED FOR DSCNT TO OCCUPIED ALT RESULTING IN NMAC.
Narrative: NO TCASII. CLRED FROM 7000 FT TO 3000 FT FOR DSCNT. AT 3800 FT IN DSCNT, CTLR SAID 'XXX, MAINTAIN 5000 FT.' THEN HE SAID 'CLB BACK TO 5000 FT AND R TURN TO 360 DEGS.' THEREAFTER STARTING CLB AND TURNING N, WE WERE TOLD TO 'DSND IMMEDIATELY TO 3000 FT.' THESE COMMANDS WERE GIVEN IN A VERY FRANTIC TONE OF VOICE. CALLED ATC ON TELEPHONE LATER AND WAS TOLD WE MISSED OTHER TFC BY 400 FT. I THINK THE CTLR JUST MADE A HUMAN ERROR TYPE OF MISTAKE AND CLRED US TO THE SAME ALT AS THE OTHER AIRLINER DEPARTING ON RWY 1 AT MCI.
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.