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Approach controller descended an light transport to same altitude as small transport and less than standard separation.
| Attributes | |
| ACN | 157184 |
| Time | |
| Date | 199009 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : pit |
| State Reference | PA |
| Altitude | msl bound lower : 3800 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pit |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | cruise other descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| ASRS Report | 157184 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 1500 vertical : 200 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
While coming into pit from mgw, we were given a descent from 6000' to 4000' on a 360 degree heading. While level at 4000' an aircraft (an small transport Y) passed from right to left at an altitude that appeared to be 200' vertical sep and less than 1/4 mi. No evasive action required. The controller (approach) took full responsibility and requested a phone call. He (the controller) noted that he had erred and was ready for disciplinary action, not required as far as we were concerned.
Original NASA ASRS Text
Title: APCH CTLR DESCENDED AN LTT TO SAME ALT AS SMT AND LESS THAN STANDARD SEPARATION.
Narrative: WHILE COMING INTO PIT FROM MGW, WE WERE GIVEN A DSNT FROM 6000' TO 4000' ON A 360 DEG HDG. WHILE LEVEL AT 4000' AN ACFT (AN SMT Y) PASSED FROM RIGHT TO LEFT AT AN ALT THAT APPEARED TO BE 200' VERT SEP AND LESS THAN 1/4 MI. NO EVASIVE ACTION REQUIRED. THE CTLR (APCH) TOOK FULL RESPONSIBILITY AND REQUESTED A PHONE CALL. HE (THE CTLR) NOTED THAT HE HAD ERRED AND WAS READY FOR DISCIPLINARY ACTION, NOT REQUIRED AS FAR AS WE WERE CONCERNED.
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.