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ZTL controller described TCAS RA event at FL250 likely caused by the rapid descent of one of the two aircraft involved; separation was retained.
| Attributes | |
| ACN | 821898 |
| Time | |
| Date | 200901 |
| Place | |
| Locale Reference | PSK.VORTAC |
| State Reference | VA |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Regional Jet 200 ER/LR (CRJ200) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Radar 19.2 |
| Events | |
| Anomaly | Conflict Airborne Conflict |
| Miss Distance | Vertical 1000 |
Narrative:
Air carrier Y (CRJ2) was level at FL240. Air carrier X was in a rapid descent to FL250. I called traffic to air carrier X then switched the aircraft to ZDC then; air carrier Y told me he was responding to a TCAS. Air carrier Y descended 800 ft to FL232. ZDC then informed me that air carrier X responded to a TCAS and went to FL260. Luckily; no other aircraft were in the vicinity.
Original NASA ASRS Text
Title: ZTL controller described TCAS RA event at FL250 likely caused by the rapid descent of one of the two aircraft involved; separation was retained.
Narrative: Air carrier Y (CRJ2) was level at FL240. Air carrier X was in a rapid descent to FL250. I called traffic to air carrier X then switched the aircraft to ZDC then; air carrier Y told me he was responding to a TCAS. Air carrier Y descended 800 FT to FL232. ZDC then informed me that air carrier X responded to a TCAS and went to FL260. Luckily; no other aircraft were in the vicinity.
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.