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An air carrier crew received a TCAS alert to descend and took evasive action to miss and aircraft by 400 ft. While descending; they reached an airspeed of 265 KTS at 8;000 ft.
| Attributes | |
| ACN | 981459 |
| Time | |
| Date | 201111 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | SFO.Airport |
| State Reference | CA |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 150 Flight Crew Total 20000 Flight Crew Type 500 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Experience | Flight Crew Last 90 Days 80 Flight Crew Total 12700 Flight Crew Type 7500 |
| Events | |
| Anomaly | Conflict NMAC Deviation - Speed All Types |
| Miss Distance | Vertical 400 |
Narrative:
We got a TCAS to descend. Co-pilot said he had the aircraft in sight between the clouds. I elected to follow the TCAS to descend. It was a second aircraft that we missed by 400 ft. In the decent; I got the airspeed up to 265 KTS below 10;000 ft. Always follow the TCAS; that's what it is there for. A visual; even on approach to runways; could mean a second aircraft like in our case.
Original NASA ASRS Text
Title: An air carrier crew received a TCAS alert to descend and took evasive action to miss and aircraft by 400 FT. While descending; they reached an airspeed of 265 KTS at 8;000 FT.
Narrative: We got a TCAS to descend. Co-pilot said he had the aircraft in sight between the clouds. I elected to follow the TCAS to descend. It was a second aircraft that we missed by 400 FT. In the decent; I got the airspeed up to 265 KTS below 10;000 FT. Always follow the TCAS; that's what it is there for. A visual; even on approach to runways; could mean a second aircraft like in our case.
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.