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A80 controller described a supposed conflict event; prm equipment indicated aircraft turning into conflict; acd equipment indicated established on course; reporter recommended repair action for prm displays.
| Attributes | |
| ACN | 824582 |
| Time | |
| Date | 200902 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ATL.Airport |
| State Reference | GA |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B747 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Radar 20 |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types |
| Miss Distance | Horizontal 12000 Vertical 1000 |
Narrative:
B747 on ILS prm approach; on prm scope. Aircraft turned left and conflicted with adjacent final. Pullout procedures are required but I observed B747 on acd display on the localizer. Although no occurrence happened; physiologically it was as though I had an error. Fix prm scopes or abandon them.
Original NASA ASRS Text
Title: A80 Controller described a supposed conflict event; PRM equipment indicated aircraft turning into conflict; ACD equipment indicated established on course; reporter recommended repair action for PRM displays.
Narrative: B747 on ILS PRM Approach; on PRM scope. Aircraft turned left and conflicted with adjacent final. Pullout procedures are required but I observed B747 on ACD display on the LOC. Although no occurrence happened; physiologically it was as though I had an error. Fix PRM scopes or abandon them.
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.