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ARTCC radar controller descended an air carrier B757 through an occupied altitude. The controller claims that the B757 was routed head-on with phl arrs and in direct conflict with a cga DA50 jet. Supposedly, the B757 did not descend as fast as the controller anticipated.
| Attributes | |
| ACN | 363159 |
| Time | |
| Date | 199703 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : jst |
| State Reference | PA |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Falcon 50 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 12 |
| ASRS Report | 363159 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Miss Distance | horizontal : 7200 vertical : 1400 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X was descending to FL350. I descended him to FL290 to separate him from cga Y FL310. Air carrier X needed to descend to FL250 to land phl. Cga Y was cleared by ZNY to dtw via direct djb...sunkr...dtw, head-on with phl arrs and in direct confliction with LOA. Air carrier X didn't descend fast enough to get below cga Y.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR DSNDED AN ACR B757 THROUGH AN OCCUPIED ALT. THE CTLR CLAIMS THAT THE B757 WAS ROUTED HEAD-ON WITH PHL ARRS AND IN DIRECT CONFLICT WITH A CGA DA50 JET. SUPPOSEDLY, THE B757 DID NOT DSND AS FAST AS THE CTLR ANTICIPATED.
Narrative: ACR X WAS DSNDING TO FL350. I DSNDED HIM TO FL290 TO SEPARATE HIM FROM CGA Y FL310. ACR X NEEDED TO DSND TO FL250 TO LAND PHL. CGA Y WAS CLRED BY ZNY TO DTW VIA DIRECT DJB...SUNKR...DTW, HEAD-ON WITH PHL ARRS AND IN DIRECT CONFLICTION WITH LOA. ACR X DIDN'T DSND FAST ENOUGH TO GET BELOW CGA Y.
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.