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Air carrier on approach to dfw experienced TCAS TA/RA at approximately 3000 ft with unreported and unseen traffic.
| Attributes | |
| ACN | 852952 |
| Time | |
| Date | 200909 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | DFW.Airport |
| State Reference | TX |
| Aircraft 1 | |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying First Officer |
| Person 2 | |
| Function | Captain Pilot Not Flying |
| Events | |
| Anomaly | Conflict NMAC Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance |
| Miss Distance | Horizontal 200 |
Narrative:
First officer (me) was flying leg to dfw. Approximately 15 minutes southwest of dfw; we were cleared to turn from 030 to 010 direct huten; descend and maintain 3000 ft until established and cleared ILS 36L at dfw. We were IMC. We noted an intruder aircraft on TCAS approximate 5000 ft below our altitude and on a converging course. We continued and monitored. Received a TA followed by a 'monitor vertical speed;' followed by an RA 'climb.' I executed the TCAS RA procedures and began to climb until we received 'clear of conflict.' leveled at approximately 3500 ft. Captain notified ATC that we were responding to an RA. Approach then recleared us for the approach which we completed without further incident. TCAS showed us within 200 ft cpa of intruder aircraft. Neither of us heard any ATC report of the traffic prior to the RA. Captain called approach upon arrival and notified dispatch. We both submitted reports.
Original NASA ASRS Text
Title: Air carrier on approach to DFW experienced TCAS TA/RA at approximately 3000 FT with unreported and unseen traffic.
Narrative: First Officer (me) was flying leg to DFW. Approximately 15 minutes southwest of DFW; we were cleared to turn from 030 to 010 direct HUTEN; descend and maintain 3000 FT until established and cleared ILS 36L at DFW. We were IMC. We noted an intruder aircraft on TCAS approximate 5000 FT below our altitude and on a converging course. We continued and monitored. Received a TA followed by a 'monitor vertical speed;' followed by an RA 'climb.' I executed the TCAS RA procedures and began to climb until we received 'clear of conflict.' Leveled at approximately 3500 FT. Captain notified ATC that we were responding to an RA. Approach then recleared us for the approach which we completed without further incident. TCAS showed us within 200 FT CPA of intruder aircraft. Neither of us heard any ATC report of the traffic prior to the RA. Captain called Approach upon arrival and notified Dispatch. We both submitted reports.
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.