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Poor coordination between high and low altitude sectors, and large transport climbed to same altitude as small transport with less than standard separation.
| Attributes | |
| ACN | 164255 |
| Time | |
| Date | 199012 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : pmd |
| State Reference | CA |
| Altitude | msl bound lower : 23000 msl bound upper : 23100 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla |
| Operator | general aviation : corporate |
| Make Model Name | Small Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 6 |
| ASRS Report | 164255 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 20 |
| ASRS Report | 164254 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 24000 vertical : 100 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
An small transport X climbing out from bur airport en route to mexican airspace came to within 4 mi and same altitude of an opp direction air carrier large transport. Large transport Y was a departure off psp and was climbing out toward pmd VORTAC. Large transport Y was supposed to stay below the small transport X during his climb out. Confusing landline coordination between controllers was the cause. Each thought the other was going to provide the sep. The reporter was working a high altitude sector and had communication with the small transport X. The small transport X was assigned FL370. As the aircraft came closer together this reporter noticed large transport Y was not stopping his climb and turned the small transport X away from large transport Y. This maneuver could not prevent the less than standard separation, 5 mi horizontal or 1000' vertical. The 2 low altitude controllers were responsible to ensure the sep between these 2 aircraft.
Original NASA ASRS Text
Title: POOR COORD BETWEEN HIGH AND LOW ALT SECTORS, AND LGT CLIMBED TO SAME ALT AS SMT WITH LESS THAN STANDARD SEPARATION.
Narrative: AN SMT X CLBING OUT FROM BUR ARPT ENRTE TO MEXICAN AIRSPACE CAME TO WITHIN 4 MI AND SAME ALT OF AN OPP DIRECTION ACR LGT. LGT Y WAS A DEP OFF PSP AND WAS CLBING OUT TOWARD PMD VORTAC. LGT Y WAS SUPPOSED TO STAY BELOW THE SMT X DURING HIS CLB OUT. CONFUSING LANDLINE COORD BTWN CTLRS WAS THE CAUSE. EACH THOUGHT THE OTHER WAS GOING TO PROVIDE THE SEP. THE RPTR WAS WORKING A HIGH ALT SECTOR AND HAD COM WITH THE SMT X. THE SMT X WAS ASSIGNED FL370. AS THE ACFT CAME CLOSER TOGETHER THIS RPTR NOTICED LGT Y WAS NOT STOPPING HIS CLB AND TURNED THE SMT X AWAY FROM LGT Y. THIS MANEUVER COULD NOT PREVENT THE LTSS, 5 MI HORIZ OR 1000' VERT. THE 2 LOW ALT CTLRS WERE RESPONSIBLE TO ENSURE THE SEP BTWN THESE 2 ACFT.
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.