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ZDC assoc radar controller witnessed operational error at FL300 when radar controller descended aircraft to occupied altitude.
| Attributes | |
| ACN | 731120 |
| Time | |
| Date | 200703 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : rdu.airport |
| State Reference | NC |
| Altitude | msl single value : 30000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Experience | controller time certified in position1 : 11 controller time certified in position2 : 2 |
| ASRS Report | 73112 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance controller : issued alert |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24600 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 inbound orf FL310. Aircraft #2 sbound FL300. Radar controller issued a descent to FL300 to aircraft #1 resulting in an immediate loss of separation. The sector was immediately busy at the time.
Original NASA ASRS Text
Title: ZDC ASSOC RADAR CTLR WITNESSED OPERROR AT FL300 WHEN RADAR CTLR DESCENDED ACFT TO OCCUPIED ALT.
Narrative: ACFT #1 INBOUND ORF FL310. ACFT #2 SBOUND FL300. RADAR CTLR ISSUED A DSCNT TO FL300 TO ACFT #1 RESULTING IN AN IMMEDIATE LOSS OF SEPARATION. THE SECTOR WAS IMMEDIATELY BUSY AT THE TIME.
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.