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Clt controller described conflict event on final at 4500 due to NORDO aircraft not responding to instructions.
| Attributes | |
| ACN | 792037 |
| Time | |
| Date | 200806 |
| Place | |
| Locale Reference | airport : clt.airport |
| State Reference | NC |
| Altitude | msl single value : 45000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : clt.tracon tower : zzzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 170/175 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : clt.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 18 |
| ASRS Report | 792037 |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Miss Distance | horizontal : 12000 vertical : 800 |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
Aircraft X was NORDO at 5000 ft. Eastbound aircraft Y was descending from 6000 ft wbound. Aircraft X went NORDO and I had missed the issued turn to the localizer. I turned aircraft Y to avoid a midair.
Original NASA ASRS Text
Title: CLT CTLR DESCRIBED CONFLICT EVENT ON FINAL AT 4500 DUE TO NORDO ACFT NOT RESPONDING TO INSTRUCTIONS.
Narrative: ACFT X WAS NORDO AT 5000 FT. EBOUND ACFT Y WAS DSNDING FROM 6000 FT WBOUND. ACFT X WENT NORDO AND I HAD MISSED THE ISSUED TURN TO THE LOC. I TURNED ACFT Y TO AVOID A MIDAIR.
Data retrieved from NASA's ASRS site as of May 2009 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.