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ZLA controller experienced operational error at 13000 between parallel aircraft; believing a climb clearance had been issued to one aircraft prior to vectoring same.
| Attributes | |
| ACN | 799968 |
| Time | |
| Date | 200808 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : lax.airport |
| State Reference | CA |
| Altitude | msl single value : 13000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude ground : maintenance |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Experience | controller radar : 22 flight time total : 300 |
| ASRS Report | 799968 |
| 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 |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 25560 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X was south aircraft on a dual vtu jet departure. Aircraft Y was the north aircraft on a dual vtu jet departure. The aircraft were about 6 mi abeam each other; both aircraft climbing to 13000 ft. I entered FL230 in air carrier X data block; mistakenly believing I had issued the climb clearance. I then turned air carrier X to the north; which crossed in front of aircraft Y. Upon recognizing that air carrier X was not climbing above aircraft Y; I turned aircraft Y to the north; away from air carrier X.
Original NASA ASRS Text
Title: ZLA CTLR EXPERIENCED OPERROR AT 13000 BETWEEN PARALLEL ACFT; BELIEVING A CLIMB CLRNC HAD BEEN ISSUED TO ONE ACFT PRIOR TO VECTORING SAME.
Narrative: ACR X WAS S ACFT ON A DUAL VTU JET DEP. ACFT Y WAS THE N ACFT ON A DUAL VTU JET DEP. THE ACFT WERE ABOUT 6 MI ABEAM EACH OTHER; BOTH ACFT CLBING TO 13000 FT. I ENTERED FL230 IN ACR X DATA BLOCK; MISTAKENLY BELIEVING I HAD ISSUED THE CLB CLRNC. I THEN TURNED ACR X TO THE N; WHICH CROSSED IN FRONT OF ACFT Y. UPON RECOGNIZING THAT ACR X WAS NOT CLBING ABOVE ACFT Y; I TURNED ACFT Y TO THE N; AWAY FROM ACR X.
Data retrieved from NASA's ASRS site as of May 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.