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Sct controller, during relief briefing process, alerts adjoining sector controller of transiting C208, which conflicts with departing B737 from ont.
| Attributes | |
| ACN | 500788 |
| Time | |
| Date | 200102 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : pdz.vortac |
| State Reference | CA |
| Altitude | msl single value : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-600 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | common carrier : air taxi |
| Make Model Name | Caravan 1 208A |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise : level |
| Route In Use | arrival : on vectors enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 8 |
| ASRS Report | 500788 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne critical non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance controller : separated traffic |
| Consequence | faa : investigated |
| Supplementary | |
| Problem Areas | Airspace Structure ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure |
Narrative:
I was the relieving controller. The controller working the position said he was busy and 'just wait a min.' I saw the C208 on the pomona sector position symbol and heading towards the riverside sector's airspace. While I was waiting for the briefing, I went to the riverside position to see if a pointout or handoff had been made. While I was talking to the riverside controller, I saw the 2 aircraft heading towards each other. The controller told the C208 to maintain visual separation with the B737 while he still had standard IFR separation. The planes got close and the B737 pilot filed an near midair collision report. I think the problem could have been prevented and prevented in the future if the pomona and riverside sectors are combined during ont east traffic.
Original NASA ASRS Text
Title: SCT CTLR, DURING RELIEF BRIEFING PROCESS, ALERTS ADJOINING SECTOR CTLR OF TRANSITING C208, WHICH CONFLICTS WITH DEPARTING B737 FROM ONT.
Narrative: I WAS THE RELIEVING CTLR. THE CTLR WORKING THE POS SAID HE WAS BUSY AND 'JUST WAIT A MIN.' I SAW THE C208 ON THE POMONA SECTOR POS SYMBOL AND HDG TOWARDS THE RIVERSIDE SECTOR'S AIRSPACE. WHILE I WAS WAITING FOR THE BRIEFING, I WENT TO THE RIVERSIDE POS TO SEE IF A POINTOUT OR HDOF HAD BEEN MADE. WHILE I WAS TALKING TO THE RIVERSIDE CTLR, I SAW THE 2 ACFT HDG TOWARDS EACH OTHER. THE CTLR TOLD THE C208 TO MAINTAIN VISUAL SEPARATION WITH THE B737 WHILE HE STILL HAD STANDARD IFR SEPARATION. THE PLANES GOT CLOSE AND THE B737 PLT FILED AN NMAC RPT. I THINK THE PROB COULD HAVE BEEN PREVENTED AND PREVENTED IN THE FUTURE IF THE POMONA AND RIVERSIDE SECTORS ARE COMBINED DURING ONT E TFC.
Data retrieved from NASA's ASRS site as of July 2007 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.