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ZLA controller experienced operational error at FL270 when aircraft climbed through occupied altitude.
| Attributes | |
| ACN | 688655 |
| Time | |
| Date | 200602 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : trm.vortac |
| State Reference | CA |
| Altitude | msl bound lower : 25000 msl bound upper : 27000 |
| Environment | |
| Weather Elements | Turbulence |
| Light | Night Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B747 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 19 controller non radar : 5 controller radar : 32 |
| ASRS Report | 688655 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert |
| Resolutory Action | controller : issued new clearance |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Combined sectors busy traffic complex no d-side. B737 at FL250 over trm reported constant moderate chop and asked if there is anything I can do to climb him. Traffic north of him at FL260 converging. I descended the aircraft at FL260 to FL240 and climbed the air carrier to FL270. Air carrier Y behind climbing out of FL270 conflict alert activated with less than 5 mi. I took action to re-establish standard separation.
Original NASA ASRS Text
Title: ZLA CTLR EXPERIENCED OPERROR AT FL270 WHEN ACFT CLBED THROUGH OCCUPIED ALT.
Narrative: COMBINED SECTORS BUSY TFC COMPLEX NO D-SIDE. B737 AT FL250 OVER TRM RPTED CONSTANT MODERATE CHOP AND ASKED IF THERE IS ANYTHING I CAN DO TO CLB HIM. TFC N OF HIM AT FL260 CONVERGING. I DSNDED THE ACFT AT FL260 TO FL240 AND CLBED THE ACR TO FL270. ACR Y BEHIND CLBING OUT OF FL270 CONFLICT ALERT ACTIVATED WITH LESS THAN 5 MI. I TOOK ACTION TO RE-ESTABLISH STANDARD SEPARATION.
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.