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Air carrier X had possible less than standard separation from company air carrier. Possible system error.
| Attributes | |
| ACN | 320563 |
| Time | |
| Date | 199511 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : lap |
| State Reference | FO |
| Altitude | msl bound lower : 18000 msl bound upper : 18700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : sllp tower : sjd |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 15000 flight time type : 4600 |
| ASRS Report | 320563 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 12000 vertical : 2000 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Inter Facility Coordination Failure other |
Narrative:
Flight from san jose del cabo, mexico, to los angeles, ca, (sjd-lax) on nov/fri/95. Clearance from sjd tower indicated a route from the sjd VOR to la paz VOR, climb to FL220 and report leaving FL180. We were established inbound to la paz VOR when we reported leaving FL180. Sjd tower directed us to switch to la paz approach control. When we reported to la paz approach control that we were leaving FL185 for FL220, approach directed us to maintain FL180 for traffic. We confirmed the new assigned altitude with the controller while arresting our 2000 plus FPM climb and returning to FL180. Our maximum altitude was approximately FL187, and we quickly leveled off at FL180. Opposing traffic inbound to sjd from la paz VOR was our own company aircraft. He reported no conflict with us on our 2ND (company) radio. The situation or potential problem seems to stem from too many high performance aircraft being controled by a very antiquated and low performing air traffic control system. Apparently there was little or no coordination between la paz approach control and sjd tower and 2 high performance civilian airliners were too much to properly control at the same time.
Original NASA ASRS Text
Title: ACR X HAD POSSIBLE LTSS FROM COMPANY ACR. POSSIBLE SYS ERROR.
Narrative: FLT FROM SAN JOSE DEL CABO, MEXICO, TO LOS ANGELES, CA, (SJD-LAX) ON NOV/FRI/95. CLRNC FROM SJD TOWER INDICATED A RTE FROM THE SJD VOR TO LA PAZ VOR, CLB TO FL220 AND RPT LEAVING FL180. WE WERE ESTABLISHED INBOUND TO LA PAZ VOR WHEN WE RPTED LEAVING FL180. SJD TWR DIRECTED US TO SWITCH TO LA PAZ APCH CTL. WHEN WE RPTED TO LA PAZ APCH CTL THAT WE WERE LEAVING FL185 FOR FL220, APCH DIRECTED US TO MAINTAIN FL180 FOR TFC. WE CONFIRMED THE NEW ASSIGNED ALT WITH THE CTLR WHILE ARRESTING OUR 2000 PLUS FPM CLB AND RETURNING TO FL180. OUR MAXIMUM ALT WAS APPROX FL187, AND WE QUICKLY LEVELED OFF AT FL180. OPPOSING TFC INBOUND TO SJD FROM LA PAZ VOR WAS OUR OWN COMPANY ACFT. HE RPTED NO CONFLICT WITH US ON OUR 2ND (COMPANY) RADIO. THE SIT OR POTENTIAL PROB SEEMS TO STEM FROM TOO MANY HIGH PERFORMANCE ACFT BEING CTLED BY A VERY ANTIQUATED AND LOW PERFORMING AIR TFC CTL SYS. APPARENTLY THERE WAS LITTLE OR NO COORD BTWN LA PAZ APCH CTL AND SJD TWR AND 2 HIGH PERFORMANCE CIVILIAN AIRLINERS WERE TOO MUCH TO PROPERLY CTL AT THE SAME TIME.
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.