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Reported operational error involving a G4 and C550 at FL410. Darc system in use at the time of the incident. Reporter implies if NAS stage a had been in use, the error would not have occurred.
| Attributes | |
| ACN | 363796 |
| Time | |
| Date | 199703 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : vhp |
| State Reference | IN |
| Altitude | msl bound lower : 41000 msl bound upper : 41000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid tower : ewr |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream IV |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 2 controller radar : 6 |
| ASRS Report | 363796 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Miss Distance | horizontal : 30000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
This situation was caused by local FAA officials deciding to use secondary display features of radar system (darc). The NAS stage a was certified and offers many more safety related tools, ie, route lines, flight plan readout, destination in data block, quick look, J ball -- and most importantly, conflict alert.
Original NASA ASRS Text
Title: RPTED OPERROR INVOLVING A G4 AND C550 AT FL410. DARC SYS IN USE AT THE TIME OF THE INCIDENT. RPTR IMPLIES IF NAS STAGE A HAD BEEN IN USE, THE ERROR WOULD NOT HAVE OCCURRED.
Narrative: THIS SIT WAS CAUSED BY LCL FAA OFFICIALS DECIDING TO USE SECONDARY DISPLAY FEATURES OF RADAR SYS (DARC). THE NAS STAGE A WAS CERTIFIED AND OFFERS MANY MORE SAFETY RELATED TOOLS, IE, RTE LINES, FLT PLAN READOUT, DEST IN DATA BLOCK, QUICK LOOK, J BALL -- AND MOST IMPORTANTLY, CONFLICT ALERT.
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.