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Phl approach controller evidently misses wrong altitude readback which places 2 aircraft into an near midair collision situation in another controller's airspace.
| Attributes | |
| ACN | 529329 |
| Time | |
| Date | 200111 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : phl.airport |
| State Reference | PA |
| Altitude | msl single value : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phl.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Citation X |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : phl.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 11 |
| ASRS Report | 529329 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : nmac non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 0 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
2 aircraft on radar vectors. I was on position for almost 2 full hours working the morning inbound push. Air carrier X aircraft was sbound off mazie and the C750 on a 100 degree heading out of bunts. I handed the C750 to fv sector and switched him. I thought air carrier X was on a 200 degree heading at 7000 ft and aimed to pass behind the C750. The targets merged 15 mi northeast of phl and both were actually at 6000 ft.
Original NASA ASRS Text
Title: PHL APCH CTLR EVIDENTLY MISSES WRONG ALT READBACK WHICH PLACES 2 ACFT INTO AN NMAC SIT IN ANOTHER CTLR'S AIRSPACE.
Narrative: 2 ACFT ON RADAR VECTORS. I WAS ON POS FOR ALMOST 2 FULL HRS WORKING THE MORNING INBOUND PUSH. ACR X ACFT WAS SBOUND OFF MAZIE AND THE C750 ON A 100 DEG HDG OUT OF BUNTS. I HANDED THE C750 TO FV SECTOR AND SWITCHED HIM. I THOUGHT ACR X WAS ON A 200 DEG HDG AT 7000 FT AND AIMED TO PASS BEHIND THE C750. THE TARGETS MERGED 15 MI NE OF PHL AND BOTH WERE ACTUALLY AT 6000 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.