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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An air carrier B727 who had just been changed from 1 foreign ARTCC to another received a TCASII TA on an unknown aircraft at the same altitude. The B727 climbed to 700 ft to avoid a conflict. No traffic was seen other than on the TCASII.
| Attributes | |
| ACN | 357967 |
| Time | |
| Date | 199701 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : tbg |
| State Reference | FO |
| Altitude | msl bound lower : 31000 msl bound upper : 31700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute airway : sked |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 250 flight time total : 22000 flight time type : 6000 |
| ASRS Report | 357967 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | vertical : 1200 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
We were sbound on UG426 near the tokot intersection from panama to quito. Panama had cleared us to FL330. We had just switched to bogota control. We were told to maintain FL310. The TCASII went from white to yellow. The traffic was indicating FL310. We climbed to avoid the conflict.
Original NASA ASRS Text
Title: AN ACR B727 WHO HAD JUST BEEN CHANGED FROM 1 FOREIGN ARTCC TO ANOTHER RECEIVED A TCASII TA ON AN UNKNOWN ACFT AT THE SAME ALT. THE B727 CLBED TO 700 FT TO AVOID A CONFLICT. NO TFC WAS SEEN OTHER THAN ON THE TCASII.
Narrative: WE WERE SBOUND ON UG426 NEAR THE TOKOT INTXN FROM PANAMA TO QUITO. PANAMA HAD CLRED US TO FL330. WE HAD JUST SWITCHED TO BOGOTA CTL. WE WERE TOLD TO MAINTAIN FL310. THE TCASII WENT FROM WHITE TO YELLOW. THE TFC WAS INDICATING FL310. WE CLBED TO AVOID THE CONFLICT.
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.