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Cpr Y descent through occupied altitude had less than standard separation with air carrier X. System error.
| Attributes | |
| ACN | 267838 |
| Time | |
| Date | 199403 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : sie |
| State Reference | NJ |
| Altitude | msl bound lower : 35000 msl bound upper : 35000 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other |
| Flight Phase | descent other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 4 |
| ASRS Report | 267838 |
| 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 non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24600 vertical : 1500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X was from the south. Cpr Y was from the west over the same NAVAID (sie) inability to correct situation prior and then Y questioning of ATC instruction caused potential major situation.
Original NASA ASRS Text
Title: CPR Y DSCNT THROUGH OCCUPIED ALT HAD LTSS WITH ACR X. SYS ERROR.
Narrative: ACR X WAS FROM THE S. CPR Y WAS FROM THE W OVER THE SAME NAVAID (SIE) INABILITY TO CORRECT SIT PRIOR AND THEN Y QUESTIONING OF ATC INSTRUCTION CAUSED POTENTIAL MAJOR SIT.
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.