Narrative:

While on final for visual to 16C at sea; between sodoe and anvil and between 2;000 and 3;000 ft MSL; encountered TCAS climb RA for traffic 400 ft below us. I initiated a climb until conflict [was] resolved. First officer reported RA to sea tower who asked us our intentions. We elected to continue approach as it was evident we could be stabilized at 1;000 ft AGL. [The] rest of [the] approach and landing were uneventful. First officer subsequently reported to me [that] he saw a cessna in our vicinity during the RA event. There was a scattered layer between 3;500 and 4;000 ft AGL; as I recall; which may have contributed to the other aircraft's inability to see and avoid us on final to 16C.

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Original NASA ASRS Text

Title: B737 Captain experiences a TCAS RA at 2;500 FT during visual approach to Runway 16C at SEA; with the intruder aircraft 400 FT below. Evasive action is taken followed by a normal landing.

Narrative: While on final for visual to 16C at SEA; between SODOE and ANVIL and between 2;000 and 3;000 FT MSL; encountered TCAS climb RA for traffic 400 FT below us. I initiated a climb until conflict [was] resolved. First Officer reported RA to SEA Tower who asked us our intentions. We elected to continue approach as it was evident we could be stabilized at 1;000 FT AGL. [The] rest of [the] approach and landing were uneventful. First Officer subsequently reported to me [that] he saw a Cessna in our vicinity during the RA event. There was a scattered layer between 3;500 and 4;000 FT AGL; as I recall; which may have contributed to the other aircraft's inability to see and avoid us on final to 16C.

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.