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Controller reporter says supervisor controller put wrong altitudes in data block for a CL65 and an air carrier B737. Altitudes were reversed and the CL65 descended through the B737's holding pattern with less than standard separation.
| Attributes | |
| ACN | 394074 |
| Time | |
| Date | 199802 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : vcn airport : phl |
| State Reference | NJ |
| Altitude | msl bound lower : 9000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : phl |
| Operator | general aviation : corporate |
| Make Model Name | Challenger CL604 |
| Operating Under FAR Part | other : unknown |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar pilot : instrument pilot : private |
| Experience | controller radar : 9 flight time total : 1200 |
| ASRS Report | 394074 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : handoff position oversight : supervisor |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | none taken : detected after the fact other |
| Consequence | Other |
| Miss Distance | horizontal : 2000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Staffing at phl was such that the watch supervisor was working south arrival handoff. He took 2 handoffs from the center at vcn, a CL65 at 10000 ft and a B737 at 9000 ft. He typed the data in wrong. (The radar showed the CL65 at 9000 ft and the B737 at 10000 ft.) the CL65 was cleared out of the hold and descent to 8000 ft, through the B737 at 9000 ft.
Original NASA ASRS Text
Title: CTLR RPTR SAYS SUPVR CTLR PUT WRONG ALTS IN DATA BLOCK FOR A CL65 AND AN ACR B737. ALTS WERE REVERSED AND THE CL65 DSNDED THROUGH THE B737'S HOLDING PATTERN WITH LTSS.
Narrative: STAFFING AT PHL WAS SUCH THAT THE WATCH SUPVR WAS WORKING S ARR HDOF. HE TOOK 2 HDOFS FROM THE CTR AT VCN, A CL65 AT 10000 FT AND A B737 AT 9000 FT. HE TYPED THE DATA IN WRONG. (THE RADAR SHOWED THE CL65 AT 9000 FT AND THE B737 AT 10000 FT.) THE CL65 WAS CLRED OUT OF THE HOLD AND DSCNT TO 8000 FT, THROUGH THE B737 AT 9000 FT.
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.