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Cpr X descent through occupied altitude had less than standard separation from air carrier Y. System error.
| Attributes | |
| ACN | 257968 |
| Time | |
| Date | 199311 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : mrb |
| State Reference | WV |
| Altitude | msl bound lower : 21000 msl bound upper : 21000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc tower : ord |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Medium Transport |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 7 |
| ASRS Report | 257968 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : non radar |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 25 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 28800 vertical : 800 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Cpr X descending from FL310, J-150 eastbound was vectored nebound to pass north and in front of air carrier Y turboprop at FL210 nebound, also on vector to pass south and behind cpr X. Vectors were not enough. Air carrier Y could have been routed ldn..ldn 031..V-377..har to stay east of washington metropolitan arrs.
Original NASA ASRS Text
Title: CPR X DSCNT THROUGH OCCUPIED ALT HAD LTSS FROM ACR Y. SYS ERROR.
Narrative: CPR X DSNDING FROM FL310, J-150 EBOUND WAS VECTORED NEBOUND TO PASS N AND IN FRONT OF ACR Y TURBOPROP AT FL210 NEBOUND, ALSO ON VECTOR TO PASS S AND BEHIND CPR X. VECTORS WERE NOT ENOUGH. ACR Y COULD HAVE BEEN ROUTED LDN..LDN 031..V-377..HAR TO STAY E OF WASHINGTON METRO ARRS.
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.