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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ARTCC controller descended a A320 to meet the next control sector altitude restr. Control actions put the A320 in conflict with a KC135. Turns to both aircraft were not sufficient to stop a system error.
| Attributes | |
| ACN | 393776 |
| Time | |
| Date | 199802 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : fnt |
| State Reference | MI |
| Altitude | msl bound lower : 37000 msl bound upper : 37000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | other |
| Make Model Name | Stratotanker 135 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller non radar : 2 controller radar : 9 |
| ASRS Report | 393776 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 12000 vertical : 700 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 was sebound at FL390 and was descended to FL310 to meet LOA with next center. When I realized aircraft #2 was traffic, I turned both aircraft. Cause of problem: oversight.
Original NASA ASRS Text
Title: ARTCC CTLR DSNDED A A320 TO MEET THE NEXT CTL SECTOR ALT RESTR. CTL ACTIONS PUT THE A320 IN CONFLICT WITH A KC135. TURNS TO BOTH ACFT WERE NOT SUFFICIENT TO STOP A SYS ERROR.
Narrative: ACFT #1 WAS SEBOUND AT FL390 AND WAS DSNDED TO FL310 TO MEET LOA WITH NEXT CTR. WHEN I REALIZED ACFT #2 WAS TFC, I TURNED BOTH ACFT. CAUSE OF PROB: OVERSIGHT.
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.