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Operational error less than standard separation between an air carrier B757 in descent and another air carrier.
| Attributes | |
| ACN | 375250 |
| Time | |
| Date | 199707 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : aba |
| State Reference | FO |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : tncf |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | enroute airway : tncf |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 375250 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | vertical : 600 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Flight was cleared G431 to bexer and G885 to aruba at FL350 and 125 mi from aba we requested a lower altitude and were told to standby. At 85 mi from aba we requested descent again and were cleared to descend to 12000 ft and on the 052 degree radial. At XX21Z and about 54 DME from aba we received a TA at our 2 O'clock position and 600 ft below. Then it changed to an RA and we flew the correction until we received the all clear. ATC was advised. It appeared that the traffic was an air carrier en route to cur.
Original NASA ASRS Text
Title: OPERROR LTSS BTWN AN ACR B757 IN DSCNT AND ANOTHER ACR.
Narrative: FLT WAS CLRED G431 TO BEXER AND G885 TO ARUBA AT FL350 AND 125 MI FROM ABA WE REQUESTED A LOWER ALT AND WERE TOLD TO STANDBY. AT 85 MI FROM ABA WE REQUESTED DSCNT AGAIN AND WERE CLRED TO DSND TO 12000 FT AND ON THE 052 DEG RADIAL. AT XX21Z AND ABOUT 54 DME FROM ABA WE RECEIVED A TA AT OUR 2 O'CLOCK POS AND 600 FT BELOW. THEN IT CHANGED TO AN RA AND WE FLEW THE CORRECTION UNTIL WE RECEIVED THE ALL CLR. ATC WAS ADVISED. IT APPEARED THAT THE TFC WAS AN ACR ENRTE TO CUR.
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.