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ZID controller experienced operational error at FL240 when failing to observe conflicting traffic prior to issuing turn.
| Attributes | |
| ACN | 679630 |
| Time | |
| Date | 200512 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | intersection : jeane |
| State Reference | IN |
| Altitude | msl single value : 24000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Citation V |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 4.5 controller radar : 12.5 |
| ASRS Report | 679630 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued alert controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 25200 vertical : 700 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X was inbound to cincinnati and aircraft Y was inbound to midway airport. I turned air carrier X for shelbyville as we had control to turn on contact. I was working the low altitude sector and did not see the other aircraft until he was at FL240. Air carrier X was descended when he was in my airspace but conflict alert activated before I had 5 mi separation. I own FL230 to 14000 ft in that area. I had the air carrier X come over at FL240; but I don't descend until they come in my airspace. The only thing that possibly helps is to change a crossing altitude for either cincinnati arrs or midway arrs.
Original NASA ASRS Text
Title: ZID CTLR EXPERIENCED OPERROR AT FL240 WHEN FAILING TO OBSERVE CONFLICTING TFC PRIOR TO ISSUING TURN.
Narrative: ACR X WAS INBOUND TO CINCINNATI AND ACFT Y WAS INBOUND TO MIDWAY ARPT. I TURNED ACR X FOR SHELBYVILLE AS WE HAD CTL TO TURN ON CONTACT. I WAS WORKING THE LOW ALT SECTOR AND DID NOT SEE THE OTHER ACFT UNTIL HE WAS AT FL240. ACR X WAS DSNDED WHEN HE WAS IN MY AIRSPACE BUT CONFLICT ALERT ACTIVATED BEFORE I HAD 5 MI SEPARATION. I OWN FL230 TO 14000 FT IN THAT AREA. I HAD THE ACR X COME OVER AT FL240; BUT I DON'T DSND UNTIL THEY COME IN MY AIRSPACE. THE ONLY THING THAT POSSIBLY HELPS IS TO CHANGE A XING ALT FOR EITHER CINCINNATI ARRS OR MIDWAY ARRS.
Data retrieved from NASA's ASRS site as of January 2009 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.