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TRACON interfacility coordination. Air carrier X had less than standard separation from air carrier Y. System error.
| Attributes | |
| ACN | 224029 |
| Time | |
| Date | 199210 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ord |
| State Reference | IL |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | descent : approach landing : go around |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : noise abatement departure other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | oversight : supervisor |
| Qualification | controller : radar |
| ASRS Report | 224029 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 9000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Inter Facility Coordination Failure Operational Error |
Narrative:
Runway 14 right final approach and runway 27L departure noise abatement procedures in use. Air carrier X on final to runway 14R was closing on traffic ahead and the final controller initiated a missed approach. The supervisor coordinated with the tower that the TRACON was pulling air carrier X out. The supervisor thought the controller had already given air carrier X a turn off the final. Approximately 1 mi outside the OM the supervisor observed air carrier X was not turning yet and instructed the controller to turn air carrier X off the final. As air carrier X started the turn air carrier Y departed runway 27 turning to a 290 heading climbing to 5000 ft (noise abatement procedure). The aircraft closed to 1.5 mi at the same altitude. Air carrier X was climbed to 5000 and turned northwest. Air carrier Y was turned south and descended to 3000 ft.
Original NASA ASRS Text
Title: TRACON INTERFAC COORD. ACR X HAD LTSS FROM ACR Y. SYS ERROR.
Narrative: RWY 14 R FINAL APCH AND RWY 27L DEP NOISE ABATEMENT PROCS IN USE. ACR X ON FINAL TO RWY 14R WAS CLOSING ON TFC AHEAD AND THE FINAL CTLR INITIATED A MISSED APCH. THE SUPVR COORDINATED WITH THE TWR THAT THE TRACON WAS PULLING ACR X OUT. THE SUPVR THOUGHT THE CTLR HAD ALREADY GIVEN ACR X A TURN OFF THE FINAL. APPROX 1 MI OUTSIDE THE OM THE SUPVR OBSERVED ACR X WAS NOT TURNING YET AND INSTRUCTED THE CTLR TO TURN ACR X OFF THE FINAL. AS ACR X STARTED THE TURN ACR Y DEPARTED RWY 27 TURNING TO A 290 HDG CLBING TO 5000 FT (NOISE ABATEMENT PROC). THE ACFT CLOSED TO 1.5 MI AT THE SAME ALT. ACR X WAS CLBED TO 5000 AND TURNED NW. ACR Y WAS TURNED S AND DSNDED TO 3000 FT.
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.