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ARTCC controller climbed medium large transport through altitude of light transport with less than standard separation.
| Attributes | |
| ACN | 85281 |
| Time | |
| Date | 198804 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ave |
| State Reference | CA |
| Altitude | msl bound lower : 31000 msl bound upper : 31400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa tower : lwb |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| ASRS Report | 85281 |
| Person 2 | |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | other |
| Consequence | Other |
| Miss Distance | horizontal : 19200 vertical : 400 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Light transport X northbound at FL310, gmn direct pxn. Medium large transport Y southbound sjc-lax, reported leaving 18500' for FL230 at XA54Z, aircraft was cleared to FL330 and slowed to 250 KTS at XA53 for spacing. At XB01Z medium large transport Y was turned left to a heading of 070 degrees for spacing. Sep minima of 5 mi was lost at XB13. The closest proximity was 3.2 mi and 400'. I believed that the aircraft (medium large transport Y) was level at FL330 prior to issuing the turn.
Original NASA ASRS Text
Title: ARTCC CTLR CLIMBED MLG THROUGH ALT OF LTT WITH LESS THAN STANDARD SEPARATION.
Narrative: LTT X NBOUND AT FL310, GMN DIRECT PXN. MLG Y SBND SJC-LAX, RPTED LEAVING 18500' FOR FL230 AT XA54Z, ACFT WAS CLRED TO FL330 AND SLOWED TO 250 KTS AT XA53 FOR SPACING. AT XB01Z MLG Y WAS TURNED LEFT TO A HDG OF 070 DEGS FOR SPACING. SEP MINIMA OF 5 MI WAS LOST AT XB13. THE CLOSEST PROX WAS 3.2 MI AND 400'. I BELIEVED THAT THE ACFT (MLG Y) WAS LEVEL AT FL330 PRIOR TO ISSUING THE TURN.
Data retrieved from NASA's ASRS site as of August 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.