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P31 controller described a near separation loss when failing to update strip altitude information during holding; descending an aircraft to an occupied altitude.
| Attributes | |
| ACN | 833376 |
| Time | |
| Date | 200904 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | P31.TRACON |
| State Reference | FL |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Mentor/Turbo Mentor (T-34) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Jet Ranger All Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Climb |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Non Radar 3 Air Traffic Control Radar 15 Air Traffic Control Time Certified In Pos 1 (yrs) 5 |
| Events | |
| Anomaly | Conflict Airborne Conflict |
| Miss Distance | Horizontal 18000 Vertical 500 |
Narrative:
I had 2 aircraft holding at nun that wanted approaches afterwards; one at pns and one at npa. When aircraft #1 advised ready for approaches as filed; I looked away from the scope to ensure he wanted approaches at npa and I hadn't updated the altitude on my strip; therefore; I assigned 4;000 ft because I thought he was at 4;000 ft. When I resumed my scan a few seconds later; I realized he was descending and turned him away from aircraft #2. I also descended aircraft #2 in holding to 3;000 ft. This situation occurred due to lack of updated strip marking.
Original NASA ASRS Text
Title: P31 Controller described a near separation loss when failing to update strip altitude information during holding; descending an aircraft to an occupied altitude.
Narrative: I had 2 aircraft holding at NUN that wanted approaches afterwards; one at PNS and one at NPA. When Aircraft #1 advised ready for approaches as filed; I looked away from the scope to ensure he wanted approaches at NPA and I hadn't updated the altitude on my strip; therefore; I assigned 4;000 FT because I thought he was at 4;000 FT. When I resumed my scan a few seconds later; I realized he was descending and turned him away from Aircraft #2. I also descended Aircraft #2 in holding to 3;000 FT. This situation occurred due to lack of updated strip marking.
Data retrieved from NASA's ASRS site as of April 2012 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.