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Air carrier X TCASII RA on oceanic route had less than standard separation with Y. System error. Evasive action taken.
| Attributes | |
| ACN | 284679 |
| Time | |
| Date | 199410 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : eyw |
| State Reference | FL |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : mmid artcc : zma |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other cruise other |
| Route In Use | enroute : atlantic enroute : other oceanic |
| 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 other cruise other |
| Route In Use | enroute : atlantic enroute : other oceanic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 16 flight time total : 2900 flight time type : 850 |
| ASRS Report | 284679 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 2000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Inter Facility Coordination Failure Operational Error |
Narrative:
Air carrier X was en route atl-mmun. En route, over the gulf of mexico, just past the minow fix at FL310 we had just been handed off from ZMA 133.9 to meridan 125.2. Just before leaving ZMA, we requested and were approved deviation left (east) of course for WX. At the location specified above, TCASII issued an RA and commanded a 'dive, dive.' we looked outside and saw another aircraft approaching opposite direction, same altitude, closing rapidly. We turned immediately to the right, a moment later, the other aircraft did the same. We passed co-altitude, opposite direction, both in r-hand turns with about 2000 ft horizontal separation.
Original NASA ASRS Text
Title: ACR X TCASII RA ON OCEANIC RTE HAD LTSS WITH Y. SYS ERROR. EVASIVE ACTION TAKEN.
Narrative: ACR X WAS ENRTE ATL-MMUN. ENRTE, OVER THE GULF OF MEXICO, JUST PAST THE MINOW FIX AT FL310 WE HAD JUST BEEN HANDED OFF FROM ZMA 133.9 TO MERIDAN 125.2. JUST BEFORE LEAVING ZMA, WE REQUESTED AND WERE APPROVED DEV L (E) OF COURSE FOR WX. AT THE LOCATION SPECIFIED ABOVE, TCASII ISSUED AN RA AND COMMANDED A 'DIVE, DIVE.' WE LOOKED OUTSIDE AND SAW ANOTHER ACFT APCHING OPPOSITE DIRECTION, SAME ALT, CLOSING RAPIDLY. WE TURNED IMMEDIATELY TO THE R, A MOMENT LATER, THE OTHER ACFT DID THE SAME. WE PASSED CO-ALT, OPPOSITE DIRECTION, BOTH IN R-HAND TURNS WITH ABOUT 2000 FT HORIZ SEPARATION.
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.