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ZLA controller experienced operational error at FL210 when transposing call signs and issuing climb clearance through occupied altitude.
| Attributes | |
| ACN | 695182 |
| Time | |
| Date | 200604 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : lhs.vortac |
| State Reference | CA |
| Altitude | msl single value : 21000 |
| Environment | |
| Flight Conditions | VMC |
| Light | 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 |
| Route In Use | departure sid : n/s |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | general aviation : personal |
| Make Model Name | PA-46 Malibu |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 25 |
| ASRS Report | 695182 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24000 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
Call signs were transposed between aircraft Z and aircraft X. Aircraft X was erroneously climbed from FL200 to FL230 through aircraft Y at FL210.
Original NASA ASRS Text
Title: ZLA CTLR EXPERIENCED OPERROR AT FL210 WHEN TRANSPOSING CALL SIGNS AND ISSUING CLB CLRNC THROUGH OCCUPIED ALT.
Narrative: CALL SIGNS WERE TRANSPOSED BTWN ACFT Z AND ACFT X. ACFT X WAS ERRONEOUSLY CLBED FROM FL200 TO FL230 THROUGH ACFT Y AT FL210.
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.