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Less than standard separation air carrier-medium large transport air carrier-widebody transport in ord TRACON airspace.
| Attributes | |
| ACN | 142344 |
| Time | |
| Date | 199004 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mdw |
| State Reference | IL |
| Altitude | msl bound lower : 6000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 8000 flight time type : 4000 |
| ASRS Report | 142344 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | controller : issued new clearance |
| 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:
En route just prior to the midpoint form mdw to mke, while being radar vectored, we had a near miss with an air carrier widebody transport. We were on a 340 degree heading at 6000' and had just recently broke out of the clouds. The first officer had just received mke ATIS and I was briefing the approach into mke. I was receiving a line check and the check airmen in the jump seat informed me of the traffic appearing between 10 and 11 O'clock. The widebody transport appeared to be at 6000' also, and was crossing from left to right heading approximately 060 degrees and less than 2 mi away. Within seconds chicago departure control (frequency 125.0) commanded a left turn heading 320 degrees and an immediate climb to 7000'. We executed the turn and climb immediately and passed above and behind the widebody transport.
Original NASA ASRS Text
Title: LESS THAN STANDARD SEPARATION ACR-MLG ACR-WDB IN ORD TRACON AIRSPACE.
Narrative: ENRTE JUST PRIOR TO THE MIDPOINT FORM MDW TO MKE, WHILE BEING RADAR VECTORED, WE HAD A NEAR MISS WITH AN ACR WDB. WE WERE ON A 340 DEG HDG AT 6000' AND HAD JUST RECENTLY BROKE OUT OF THE CLOUDS. THE F/O HAD JUST RECEIVED MKE ATIS AND I WAS BRIEFING THE APCH INTO MKE. I WAS RECEIVING A LINE CHK AND THE CHK AIRMEN IN THE JUMP SEAT INFORMED ME OF THE TFC APPEARING BTWN 10 AND 11 O'CLOCK. THE WDB APPEARED TO BE AT 6000' ALSO, AND WAS XING FROM LEFT TO RIGHT HDG APPROX 060 DEGS AND LESS THAN 2 MI AWAY. WITHIN SECS CHICAGO DEP CTL (FREQ 125.0) COMMANDED A LEFT TURN HDG 320 DEGS AND AN IMMEDIATE CLB TO 7000'. WE EXECUTED THE TURN AND CLB IMMEDIATELY AND PASSED ABOVE AND BEHIND THE WDB.
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.