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FK100 air carrier aircraft in cruise had TCASII RA and reporter captain descended 1000 ft to evade intruder. When questioning ARTCC radar controller, the controller was aware of the conflict.
| Attributes | |
| ACN | 377736 |
| Time | |
| Date | 199708 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : hmv |
| State Reference | TN |
| Altitude | msl bound lower : 21000 msl bound upper : 22000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl |
| Operator | common carrier : air carrier |
| Make Model Name | Fokker 100 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute airway : ztl |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 10000 flight time type : 2400 |
| ASRS Report | 377736 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : nmac non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Was en route to clt and deviating north of hmv due to a thunderstorm. Got a TA followed immediately by an RA to descend immediately, which I did. Leveled at FL210 and was clear of the conflict. The other aircraft was never seen and it was on a different frequency. ZTL confirmed there had been a near miss. ATC never called out the traffic nor gave any deconflicting instructions.
Original NASA ASRS Text
Title: FK100 ACR ACFT IN CRUISE HAD TCASII RA AND RPTR CAPT DSNDED 1000 FT TO EVADE INTRUDER. WHEN QUESTIONING ARTCC RADAR CTLR, THE CTLR WAS AWARE OF THE CONFLICT.
Narrative: WAS ENRTE TO CLT AND DEVIATING N OF HMV DUE TO A TSTM. GOT A TA FOLLOWED IMMEDIATELY BY AN RA TO DSND IMMEDIATELY, WHICH I DID. LEVELED AT FL210 AND WAS CLR OF THE CONFLICT. THE OTHER ACFT WAS NEVER SEEN AND IT WAS ON A DIFFERENT FREQ. ZTL CONFIRMED THERE HAD BEEN A NEAR MISS. ATC NEVER CALLED OUT THE TFC NOR GAVE ANY DECONFLICTING INSTRUCTIONS.
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.