ZLA CTLR TAKES EVASIVE CTL ACTIONS WITH AN E120 AFTER AFFECTING COORD WITH ADJOINING SECTOR WITH CONFLICTING TFC.

1999-04 · NASA ASRS report 433983

Date: 1999-04

Anomalies: conflict-airborne-conflict|other-sector-traffic-managment

Synopsis

ZLA CTLR TAKES EVASIVE CTL ACTIONS WITH AN E120 AFTER AFFECTING COORD WITH ADJOINING SECTOR WITH CONFLICTING TFC.

Narrative

I WAS WORKING ACR W AT FL190. I HAD RECEIVED THE HDOF FROM SECTOR R21 WHO TOLD ME ACR W WAS REQUESTING DIRECT BZA. IT WAS NOT IN THE COMPUTER AND HE WAS MY CTL REF ACR X. I HAD A POINTOUT ON ACR X AND WHEN ACR X LEFT FL210; I CLBED ACR W TO FL210. I TOLD R21 I WAS TURNING THE ACR W TO BZA AND ISSUED A 130 DEG HDG TO KEEP AWAY FROM ACR Y OVER PDZ. THEN I GOT A POINTOUT ON AN ACR Z STOPPED AT FL200. I TOLD ACR W TO IMMEDIATELY DSND AND MAINTAIN FL190 AND TURNED ACR W BACK TO 080 DEGS AWAY FROM THE ACR Z I ISSUED TFC. THE ACR W MODE C READ 19800 FT THEN STARTED DSNDING. THE ACFT GOT NO CLOSER THAN 5-6 MI; AND 200 FT VERTLY. CONFLICT ALERT DID ACTIVATE AND ACR W SAID HE HAD THE ACR Z ON TCASII. THIS WAS NOT AN OPERROR BUT COULD HAVE BEEN. THE SECTOR 21 CTLR WAS NEW AND HAD BEEN SIGNED OFF ON THE SECTOR ONLY A MATTER OF DAYS. HIS SUPVR WAS STANDING BEHIND HIM TELLING HIM WHAT TO DO; INSTEAD OF PUTTING ANOTHER CTLR IN TO WORK. THE NEW CTLR WAS FINALLY RELIEVED. I BELIEVE POOR JUDGEMENT ON THE SUPVR'S PART CONTRIBUTED TO THIS SIT. SECTOR 21 WAS COMBINED WITH SECTOR 22 WHICH IS THE WAY IT IS NORMALLY RUN; AT TIMES DANGEROUSLY; PLUS THE RADAR RESOLUTION WAS POOR WITH CLUTTER. SUPPLEMENTAL INFO FROM ACN 434190: WE WERE ACR W AND A SIMILAR SOUNDING CALL SIGN; COMPANY ACR X WAS ALSO ON FREQ. WE HAD JUST BEEN HANDED OFF TO ZLA; AND ON INITIAL CONTACT WE REQUESTED FL210 AND DIRECT BZA OR IPL (VOR) IF POSSIBLE. THE CTLR SOON AFTER; GAVE US A 130 DEG HDG AND TOLD US TO CLB TO FL210. WHEN COMPANY ACR X ASKED FOR DIRECT IPL; SHE (THE CTLR) SEEMED PUZZLED BY THIS REQUEST AND QUERIED THEM. SHE SEEMED VERY BUSY AND A BIT OVERLOADED. SHE THEN MADE A CALL TO US AND TOLD US TO STOP OUR CLB AND DSND IMMEDIATELY TO FL190 AND RPTED TFC AT OUR 3 O'CLOCK POS. WE SHOULD HAVE QUESTIONED THE CTLR WHEN SHE SEEMED CONFUSED BTWN US AND OUR COMPANY ACFT. BUT AT THE TIME SHE WAS SO BUSY; I DON'T THINK WE COULD HAVE GOTTEN A WORD IN.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.

Loading the flight search…

Frequently asked questions

How do I search flights by aircraft type on FlightFinder?

Pick an aircraft model — Boeing 737, Airbus A320, A380, Boeing 787 Dreamliner and more — enter your origin airport, and FlightFinder shows every route that plane flies from there with live fares.

Which aircraft types can I filter by?

We support Boeing 737/747/757/767/777/787, the full Airbus A220/A319/A320/A321/A330/A340/A350/A380 family, Embraer E170/E175/E190/E195, Bombardier CRJ and Dash 8, and the ATR 42/72 turboprops.

Is FlightFinder free to use?

Search and schedules are free. Pro ($4.99/month, $39/year, or $99 one-time lifetime) unlocks the enriched flight card — on-time stats, CO₂ per passenger, amenities, live gate & weather — plus My Trips with push alerts.

Where does the route data come from?

Live schedules come from Amadeus, AeroDataBox and Travelpayouts. Observed routes (which aircraft actually flew a given city pair) are crowdsourced from adsb.lol ADS-B data under the Open Database License.