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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An near midair collision is avoided, narrowly, when air carrier flight X continues climb through occupied altitude of air carrier Y at FL370 near logol intersection, on frequency with sgfa, first officer.
| Attributes | |
| ACN | 483185 |
| Time | |
| Date | 200008 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : logol |
| State Reference | FO |
| Altitude | msl bound lower : 37000 msl bound upper : 39000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : den.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : vacating altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : atp pilot : commercial pilot : flight engineer pilot : multi engine |
| Experience | flight time last 90 days : 240 flight time total : 8000 |
| ASRS Report | 483185 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | airspace violation : exit conflict : airborne critical non adherence : published procedure non adherence : far non adherence : clearance non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 1000 |
| Supplementary | |
| Problem Areas | Environmental Factor Flight Crew Human Performance ATC Human Performance Airspace Structure Company |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Northbound on UL315 north of logol intersection, during a climb from FL310 to FL390, a sbound aircraft was observed ahead of us approximately 35-40 mi ahead, and east of us by 10 mi (east off course) and the airplane was at FL370. We turned west to further increase our horizontal distance, but the sbound airplane made a turn towards us to the west and was the cause of the RA and near miss. We acquired the sbound flight both on TCASII, and visually. The sbound aircraft never saw us visually until after passing below us, but he made a turn based solely on his TCASII display, not visual.
Original NASA ASRS Text
Title: AN NMAC IS AVOIDED, NARROWLY, WHEN ACR FLT X CONTINUES CLB THROUGH OCCUPIED ALT OF ACR Y AT FL370 NEAR LOGOL INTXN, ON FREQ WITH SGFA, FO.
Narrative: NBOUND ON UL315 N OF LOGOL INTXN, DURING A CLB FROM FL310 TO FL390, A SBOUND ACFT WAS OBSERVED AHEAD OF US APPROX 35-40 MI AHEAD, AND E OF US BY 10 MI (E OFF COURSE) AND THE AIRPLANE WAS AT FL370. WE TURNED W TO FURTHER INCREASE OUR HORIZ DISTANCE, BUT THE SBOUND AIRPLANE MADE A TURN TOWARDS US TO THE W AND WAS THE CAUSE OF THE RA AND NEAR MISS. WE ACQUIRED THE SBOUND FLT BOTH ON TCASII, AND VISUALLY. THE SBOUND ACFT NEVER SAW US VISUALLY UNTIL AFTER PASSING BELOW US, BUT HE MADE A TURN BASED SOLELY ON HIS TCASII DISPLAY, NOT VISUAL.
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.