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Trainee descends aircraft through an occupied altitude resulting in less than standard separation. Instrument attention diverted.
| Attributes | |
| ACN | 200576 |
| Time | |
| Date | 199201 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : ihd |
| State Reference | PA |
| Altitude | msl bound lower : 20000 msl bound upper : 20000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob tower : msp |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | other |
| Make Model Name | Military Transport |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 7 |
| ASRS Report | 200576 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : developmental |
| Events | |
| Anomaly | non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 24600 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Intra Facility Coordination Failure |
Narrative:
I was conducting an evaluation of a trainee to determine if he was ready for certification or required more training. We were just getting into an inbound push for pittsburgh international airport. There was no radar associate on position and I had requested one. When he arrived, my attention was diverted to him while he assumed the position, when my attention was focused back to the radar, I noticed the trainee had descended one aircraft through the altitude of another. At first, there was lateral separation, but it was diminishing fast, I asked him what he was going to do and he turned the descending aircraft 15 degree left, which was not enough due to the closeness. He finally turned the aircraft to a 040 degree heading, (about 90 degree off course). I called the next sector to have them turn the other aircraft involved. The trainee forgot he had given the next controller control for turns on the first aircraft, and they had exercised that option.
Original NASA ASRS Text
Title: TRAINEE DSNDS ACFT THROUGH AN OCCUPIED ALT RESULTING IN LTSS. INSTR ATTN DIVERTED.
Narrative: I WAS CONDUCTING AN EVALUATION OF A TRAINEE TO DETERMINE IF HE WAS READY FOR CERTIFICATION OR REQUIRED MORE TRAINING. WE WERE JUST GETTING INTO AN INBOUND PUSH FOR PITTSBURGH INTL ARPT. THERE WAS NO RADAR ASSOCIATE ON POS AND I HAD REQUESTED ONE. WHEN HE ARRIVED, MY ATTN WAS DIVERTED TO HIM WHILE HE ASSUMED THE POS, WHEN MY ATTN WAS FOCUSED BACK TO THE RADAR, I NOTICED THE TRAINEE HAD DSNDED ONE ACFT THROUGH THE ALT OF ANOTHER. AT FIRST, THERE WAS LATERAL SEPARATION, BUT IT WAS DIMINISHING FAST, I ASKED HIM WHAT HE WAS GOING TO DO AND HE TURNED THE DSNDING ACFT 15 DEG L, WHICH WAS NOT ENOUGH DUE TO THE CLOSENESS. HE FINALLY TURNED THE ACFT TO A 040 DEG HDG, (ABOUT 90 DEG OFF COURSE). I CALLED THE NEXT SECTOR TO HAVE THEM TURN THE OTHER ACFT INVOLVED. THE TRAINEE FORGOT HE HAD GIVEN THE NEXT CTLR CTL FOR TURNS ON THE FIRST ACFT, AND THEY HAD EXERCISED THAT OPTION.
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.