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A300 flight crew northbound UG437 at FL280 initiates evasive TCASII descent due to opposite direction descending traffic.
| Attributes | |
| ACN | 440556 |
| Time | |
| Date | 199906 |
| Day | Sun |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | intersection : vumal |
| State Reference | FO |
| Altitude | msl bound lower : 27700 msl bound upper : 28000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : sked.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : g437.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 440556 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | flight crew : took precautionary avoidance action |
| Miss Distance | horizontal : 0 vertical : 750 |
| Supplementary | |
| Problem Areas | ATC Human Performance Airspace Structure |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Location: northbound UG437 30 DME north of vumal. Traffic warning showed aircraft Y 20 mi ahead 900 ft above and descending. RA alert displayed to descend at 1500 FPM until we got to 27700 ft then alert ended. Aircraft above us showed on TCASII to be as close as 600 ft above at closest point. It looked like he passed over us between 500-1000 ft above. We notified bog control of the RA action and our return to FL280. They were in contact with the aircraft.
Original NASA ASRS Text
Title: A300 FLC NBOUND UG437 AT FL280 INITIATES EVASIVE TCASII DSCNT DUE TO OPPOSITE DIRECTION DSNDING TFC.
Narrative: LOCATION: NBOUND UG437 30 DME N OF VUMAL. TFC WARNING SHOWED ACFT Y 20 MI AHEAD 900 FT ABOVE AND DSNDING. RA ALERT DISPLAYED TO DSND AT 1500 FPM UNTIL WE GOT TO 27700 FT THEN ALERT ENDED. ACFT ABOVE US SHOWED ON TCASII TO BE AS CLOSE AS 600 FT ABOVE AT CLOSEST POINT. IT LOOKED LIKE HE PASSED OVER US BTWN 500-1000 FT ABOVE. WE NOTIFIED BOG CTL OF THE RA ACTION AND OUR RETURN TO FL280. THEY WERE IN CONTACT WITH THE ACFT.
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.