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ZLA controller experienced operational error at approximately FL190 while providing numerous vectors and climb/descents clrncs; citing busy/complex traffic.
| Attributes | |
| ACN | 778660 |
| Time | |
| Date | 200803 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : tnp.airport |
| State Reference | CA |
| Altitude | msl bound lower : 17000 msl bound upper : 20000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air taxi |
| Make Model Name | PC-12 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | general aviation : personal |
| Make Model Name | PC-12 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar controller : non radar pilot : instrument |
| Experience | controller non radar : 1.5 controller radar : 20 flight time total : 600 |
| ASRS Report | 778660 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : developmental |
| ASRS Report | 779208 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera other controllerb |
| Resolutory Action | controller : issued alert controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 27240 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
The sector was busy and complex; requiring more than 3/4 of aircraft requiring vectors for climb and descent. Aircraft were being 'stair stepped' up and down due to heavy traffic. Aircraft X (PC12) was being vectored away from aircraft departing psp; mainly aircraft Z. Aircraft Z climbed to FL190 and vectored north. Aircraft X descended FL200. Aircraft Y (PC12) cleared direct GPS at FL190. Aircraft X issued heading 210 degrees to get towards psp and parallel aircraft Y aircraft. Aircraft X descended 17000 ft; other clrncs issued to other aircraft. Conflict alert activated after separation lost. Aircraft X and aircraft Y descended 17000 ft; further vectors not needed. Aircraft were passing.
Original NASA ASRS Text
Title: ZLA CTLR EXPERIENCED OPERROR AT APPROX FL190 WHILE PROVIDING NUMEROUS VECTORS AND CLIMB/DESCENTS CLRNCS; CITING BUSY/COMPLEX TFC.
Narrative: THE SECTOR WAS BUSY AND COMPLEX; REQUIRING MORE THAN 3/4 OF ACFT REQUIRING VECTORS FOR CLB AND DSCNT. ACFT WERE BEING 'STAIR STEPPED' UP AND DOWN DUE TO HVY TFC. ACFT X (PC12) WAS BEING VECTORED AWAY FROM ACFT DEPARTING PSP; MAINLY ACFT Z. ACFT Z CLBED TO FL190 AND VECTORED N. ACFT X DSNDED FL200. ACFT Y (PC12) CLRED DIRECT GPS AT FL190. ACFT X ISSUED HDG 210 DEGS TO GET TOWARDS PSP AND PARALLEL ACFT Y ACFT. ACFT X DSNDED 17000 FT; OTHER CLRNCS ISSUED TO OTHER ACFT. CONFLICT ALERT ACTIVATED AFTER SEPARATION LOST. ACFT X AND ACFT Y DSNDED 17000 FT; FURTHER VECTORS NOT NEEDED. ACFT WERE PASSING.
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.