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Medium large transport departing behind an light transport on runway 27L ord is given vectors during climb that brought the medium large transport into close proximity with the light transport. Reporter flying medium large transport states less than standard separation due to ATC error.
| Attributes | |
| ACN | 152343 |
| Time | |
| Date | 199007 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| 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 | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | climbout : intermediate altitude |
| 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 : 200 flight time total : 17000 flight time type : 4600 |
| ASRS Report | 152343 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Miss Distance | horizontal : 9000 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Departing ord 27L in morning rush. Light transport departed 27L ahead of us. He was given a 220 degree heading. We departed approximately 1 min later on 270 degree heading. At about 1500' we were given a 240 degree heading. Shortly thereafter we were given a heading of 180 degrees. While 1/2 way through the turn we saw the light transport near our altitude at about 11 O'clock and 2 mi. It looked more prudent to steepen the turn and pass behind than to turn back to the right. Departure control then asked what our heading was, told us of the traffic and turned us to 140 degree heading. Frequency congestion may have been a problem.
Original NASA ASRS Text
Title: MLG DEPARTING BEHIND AN LTT ON RWY 27L ORD IS GIVEN VECTORS DURING CLIMB THAT BROUGHT THE MLG INTO CLOSE PROX WITH THE LTT. REPORTER FLYING MLG STATES LESS THAN STANDARD SEPARATION DUE TO ATC ERROR.
Narrative: DEPARTING ORD 27L IN MORNING RUSH. LTT DEPARTED 27L AHEAD OF US. HE WAS GIVEN A 220 DEG HDG. WE DEPARTED APPROX 1 MIN LATER ON 270 DEG HDG. AT ABOUT 1500' WE WERE GIVEN A 240 DEG HDG. SHORTLY THEREAFTER WE WERE GIVEN A HDG OF 180 DEGS. WHILE 1/2 WAY THROUGH THE TURN WE SAW THE LTT NEAR OUR ALT AT ABOUT 11 O'CLOCK AND 2 MI. IT LOOKED MORE PRUDENT TO STEEPEN THE TURN AND PASS BEHIND THAN TO TURN BACK TO THE RIGHT. DEP CTL THEN ASKED WHAT OUR HDG WAS, TOLD US OF THE TFC AND TURNED US TO 140 DEG HDG. FREQ CONGESTION MAY HAVE BEEN A PROB.
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.