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Controller called traffic to mdt as opposite direction and 1000 ft lower, later gave turns to both aircraft when it was discovered that the small aircraft was at same altitude.
| Attributes | |
| ACN | 191421 |
| Time | |
| Date | 199110 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : pbi |
| State Reference | FL |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Dusk |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Route In Use | enroute airway : pbi |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 110 flight time total : 15000 flight time type : 4500 |
| ASRS Report | 191421 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Pilot Deviation |
Narrative:
We were sbound at 4000 ft and issued small aircraft Y traffic at 12 O'clock opposite direction at 3000 ft and were told we would be given further descent after passing that traffic. Told controller we did not have the traffic, but were looking. Controller then questioned the small aircraft Y on his altitude and he said 4000 ft. Controller then turned the small aircraft Y west and us east. It was only after this turn did we see the small aircraft Y pass off our right side.
Original NASA ASRS Text
Title: CTLR CALLED TFC TO MDT AS OPPOSITE DIRECTION AND 1000 FT LOWER, LATER GAVE TURNS TO BOTH ACFT WHEN IT WAS DISCOVERED THAT THE SMA WAS AT SAME ALT.
Narrative: WE WERE SBOUND AT 4000 FT AND ISSUED SMA Y TFC AT 12 O'CLOCK OPPOSITE DIRECTION AT 3000 FT AND WERE TOLD WE WOULD BE GIVEN FURTHER DSCNT AFTER PASSING THAT TFC. TOLD CTLR WE DID NOT HAVE THE TFC, BUT WERE LOOKING. CTLR THEN QUESTIONED THE SMA Y ON HIS ALT AND HE SAID 4000 FT. CTLR THEN TURNED THE SMA Y W AND US E. IT WAS ONLY AFTER THIS TURN DID WE SEE THE SMA Y PASS OFF OUR R SIDE.
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.