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ZLA controller experienced operational error at FL340 when descending opposite direction traffic through occupied altitude.
| Attributes | |
| ACN | 719132 |
| Time | |
| Date | 200611 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : pmd.vortac |
| State Reference | CA |
| Altitude | msl single value : 34000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | general aviation : personal |
| Make Model Name | Gulfstream IV |
| 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 : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar controller : military controller : developmental |
| Experience | controller military : 8 controller radar : 8 controller time certified in position2 : 7 |
| ASRS Report | 719132 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued alert controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24000 vertical : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Descended aircraft X to meet pmd crossing restr. Air carrier Y was opposite direction at FL340.
Original NASA ASRS Text
Title: ZLA CTLR EXPERIENCED OPERROR AT FL340 WHEN DSNDING OPPOSITE DIRECTION TFC THROUGH OCCUPIED ALT.
Narrative: DSNDED ACFT X TO MEET PMD CROSSING RESTR. ACR Y WAS OPPOSITE DIRECTION AT FL340.
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.