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Small transport X descent through occupied altitude. Had less than standard separation from air carrier Y. System error.
| Attributes | |
| ACN | 274843 |
| Time | |
| Date | 199406 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : phl |
| State Reference | PA |
| Altitude | msl bound lower : 6000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phl |
| Operator | general aviation : corporate |
| Make Model Name | Baron 55/Cochise |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : developmental controller : radar |
| Experience | controller non radar : 3 controller radar : 4 |
| ASRS Report | 274843 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| 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 | Other |
| Miss Distance | horizontal : 12000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I had been working another sector for 1 hour. When I was relieved, I was told to go to another sector to receive on-the-job training (OJT). After approximately 7 mins at the sector, this situation developed between a be-55 and B757 Y. The be-55 was instructed to descend to 5000 ft from 7000 ft northbound. On V29 14 mi south of the dqo VOR, the B757 was at 6000 ft 15 mi southeast of dqo VOR being vectored to the ILS 9R final approach course. The B757 was issued a vector of 040 degrees 7 mi southeast of dqo VOR, the be-55 was at 6000 ft.
Original NASA ASRS Text
Title: SMT X DSCNT THROUGH OCCUPIED ALT. HAD LTSS FROM ACR Y. SYS ERROR.
Narrative: I HAD BEEN WORKING ANOTHER SECTOR FOR 1 HR. WHEN I WAS RELIEVED, I WAS TOLD TO GO TO ANOTHER SECTOR TO RECEIVE ON-THE-JOB TRAINING (OJT). AFTER APPROX 7 MINS AT THE SECTOR, THIS SIT DEVELOPED BTWN A BE-55 AND B757 Y. THE BE-55 WAS INSTRUCTED TO DSND TO 5000 FT FROM 7000 FT NBOUND. ON V29 14 MI S OF THE DQO VOR, THE B757 WAS AT 6000 FT 15 MI SE OF DQO VOR BEING VECTORED TO THE ILS 9R FINAL APCH COURSE. THE B757 WAS ISSUED A VECTOR OF 040 DEGS 7 MI SE OF DQO VOR, THE BE-55 WAS 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.