 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
ZID ARTCC radar controller failed in an attempt to separate opposite traffic at FL350 by turning aircraft both to the right and descending one to FL310.
| Attributes | |
| ACN | 625971 |
| Time | |
| Date | 200407 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : rod.vortac |
| State Reference | OH |
| Altitude | msl single value : 35000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 18 controller time certified in position1 : 18 |
| ASRS Report | 625971 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne critical non adherence : published procedure non adherence : required legal separation other spatial deviation |
| Independent Detector | atc equipment : conflict alert atc equipment other atc equipment : radar/mode c other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance |
| Miss Distance | horizontal : 19200 vertical : 1600 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X swbound at FL350 in confliction with act Y. Aircraft X was turned 30 degrees right but read back 30 degrees left. I reissued the 30 degree right turn. I also turned aircraft Y 30 degrees left and descended him to FL310. Aedp activated before vertical separation was attained. Attention was diverted to aircraft Z who had no operating transponder.
Original NASA ASRS Text
Title: ZID ARTCC RADAR CTLR FAILED IN AN ATTEMPT TO SEPARATE OPPOSITE TFC AT FL350 BY TURNING ACFT BOTH TO THE R AND DSNDING ONE TO FL310.
Narrative: ACFT X SWBOUND AT FL350 IN CONFLICTION WITH ACT Y. ACFT X WAS TURNED 30 DEGS R BUT READ BACK 30 DEGS L. I REISSUED THE 30 DEG R TURN. I ALSO TURNED ACFT Y 30 DEGS L AND DSNDED HIM TO FL310. AEDP ACTIVATED BEFORE VERT SEPARATION WAS ATTAINED. ATTN WAS DIVERTED TO ACFT Z WHO HAD NO OPERATING XPONDER.
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.