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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ARTCC radar controller issues a descent clearance to a wbound private jet that conflicts with an eastbound air carrier A321 in level flight.
| Attributes | |
| ACN | 540193 |
| Time | |
| Date | 200203 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : sny.vortac |
| State Reference | NE |
| Altitude | msl bound lower : 37000 msl bound upper : 38000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv.artcc |
| Operator | general aviation : personal |
| Make Model Name | Learjet 29 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdv.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A321 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| ASRS Report | 540193 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure |
| Independent Detector | other controllera |
| Consequence | faa : investigated |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X was wbound at FL390. He was at hayden, co, lander questioning lower. Aircraft Y was an eastbound overflt at FL370. Aircraft X was given a descent clearance to FL350. Conflict alert activated and aircraft X's descent was stepped at FL380. Traffic on the sector had been building and there was about 15 aircraft in the sector at the time of the occurrence. Another traffic situation was being dealt with as this error occurred. The sector was too busy to be manned by 1 person.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR ISSUES A DSCNT CLRNC TO A WBOUND PVT JET THAT CONFLICTS WITH AN EBOUND ACR A321 IN LEVEL FLT.
Narrative: ACFT X WAS WBOUND AT FL390. HE WAS AT HAYDEN, CO, LANDER QUESTIONING LOWER. ACFT Y WAS AN EBOUND OVERFLT AT FL370. ACFT X WAS GIVEN A DSCNT CLRNC TO FL350. CONFLICT ALERT ACTIVATED AND ACFT X'S DSCNT WAS STEPPED AT FL380. TFC ON THE SECTOR HAD BEEN BUILDING AND THERE WAS ABOUT 15 ACFT IN THE SECTOR AT THE TIME OF THE OCCURRENCE. ANOTHER TFC SIT WAS BEING DEALT WITH AS THIS ERROR OCCURRED. THE SECTOR WAS TOO BUSY TO BE MANNED BY 1 PERSON.
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.