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Air carrier X TCASII TA RA had less than standard separation from air carrier Y. System error. Evasive action taken.
| Attributes | |
| ACN | 296458 |
| Time | |
| Date | 199502 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : shb |
| State Reference | IN |
| Altitude | msl bound lower : 30000 msl bound upper : 30000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid |
| 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 : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 225 flight time total : 18000 flight time type : 2100 |
| ASRS Report | 296458 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 18000 vertical : 1000 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Passing approximately FL300, under at control (ZID), in descent and on assigned heading 105 degrees, received TCASII advisory, 'traffic, traffic.' queried center about traffic climbing below us. We were directed, 'air carrier X immediate right turn to 180 degrees.' commencing turn, TCASII aural of 'monitor vertical speed,' continued turn to the south. TCASII aural 'clear of conflict.' continued flight to cvg with clearance and vectors., supplemental information from acn 296464: cvg arrival descended in the path of ord departure in the climb.
Original NASA ASRS Text
Title: ACR X TCASII TA RA HAD LTSS FROM ACR Y. SYS ERROR. EVASIVE ACTION TAKEN.
Narrative: PASSING APPROX FL300, UNDER AT CTL (ZID), IN DSCNT AND ON ASSIGNED HDG 105 DEGS, RECEIVED TCASII ADVISORY, 'TFC, TFC.' QUERIED CTR ABOUT TFC CLBING BELOW US. WE WERE DIRECTED, 'ACR X IMMEDIATE R TURN TO 180 DEGS.' COMMENCING TURN, TCASII AURAL OF 'MONITOR VERT SPD,' CONTINUED TURN TO THE S. TCASII AURAL 'CLR OF CONFLICT.' CONTINUED FLT TO CVG WITH CLRNC AND VECTORS., SUPPLEMENTAL INFO FROM ACN 296464: CVG ARR DSNDED IN THE PATH OF ORD DEP IN THE CLB.
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.