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Reporter alleges air carrier X had less than standard separation from air carrier Y in ord TCA. Possible system error.
| Attributes | |
| ACN | 242064 |
| Time | |
| Date | 199305 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : obk |
| State Reference | IL |
| Altitude | msl bound lower : 6000 msl bound upper : 6000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord tower : syr |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | other personnel other |
| Qualification | controller : radar |
| Experience | controller non radar : 2 controller radar : 13 |
| ASRS Report | 242064 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 3000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
I was working local at pal-waukee ATCT (pwk) when I noticed 2 aircraft in close proximity on my BRITE radar. One was air carrier X, the other was air carrier Y. O'hare TRACON's conflict alert was going off on both aircraft. They were about 5 mi northwest of obk, nebound, at the same altitude and about 1/2 mi apart. (I checked the distance on my radar.)
Original NASA ASRS Text
Title: RPTR ALLEGES ACR X HAD LTSS FROM ACR Y IN ORD TCA. POSSIBLE SYS ERROR.
Narrative: I WAS WORKING LCL AT PAL-WAUKEE ATCT (PWK) WHEN I NOTICED 2 ACFT IN CLOSE PROX ON MY BRITE RADAR. ONE WAS ACR X, THE OTHER WAS ACR Y. O'HARE TRACON'S CONFLICT ALERT WAS GOING OFF ON BOTH ACFT. THEY WERE ABOUT 5 MI NW OF OBK, NEBOUND, AT THE SAME ALT AND ABOUT 1/2 MI APART. (I CHKED THE DISTANCE ON MY RADAR.)
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.