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Controller descended gulfstream 4 aircraft to a lower flight level and a confliction occurred with a falcon 50 aircraft causing a loss of separation.
| Attributes | |
| ACN | 402132 |
| Time | |
| Date | 199805 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : lvt |
| State Reference | TN |
| Altitude | msl bound lower : 37000 msl bound upper : 39000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream IV |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Falcon 50 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : flight data |
| Qualification | controller : radar |
| Experience | controller radar : 19 |
| ASRS Report | 402132 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance none taken : unable other |
| Consequence | Other |
| Miss Distance | horizontal : 3000 vertical : 1400 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
1 aircraft was descended to FL370 from FL390. Descent rate was not sufficient and turns were not timely.
Original NASA ASRS Text
Title: CTLR DSNDED GULFSTREAM 4 ACFT TO A LOWER FLT LEVEL AND A CONFLICTION OCCURRED WITH A FALCON 50 ACFT CAUSING A LOSS OF SEPARATION.
Narrative: 1 ACFT WAS DSNDED TO FL370 FROM FL390. DSCNT RATE WAS NOT SUFFICIENT AND TURNS WERE NOT TIMELY.
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.