Narrative:

On IFR departure from bfi about 500-800 ft AGL, our TCASII said 'traffic' then 'pull up, pull up.' then we saw C172/182 opposite direction and slightly right of course, perhaps straight-in heading to reciprocal runway at bfi. We alerted sea departure. No TA had been given by bfi tower or sea departure.

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Original NASA ASRS Text

Title: WW25 CPR CREW OFF BFI HAVE AN NMAC JUST AFTER TKOF WITH SEL CESSNA OPPOSITE DIRECTION.

Narrative: ON IFR DEP FROM BFI ABOUT 500-800 FT AGL, OUR TCASII SAID 'TFC' THEN 'PULL UP, PULL UP.' THEN WE SAW C172/182 OPPOSITE DIRECTION AND SLIGHTLY R OF COURSE, PERHAPS STRAIGHT-IN HDG TO RECIPROCAL RWY AT BFI. WE ALERTED SEA DEP. NO TA HAD BEEN GIVEN BY BFI TWR OR SEA DEP.

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.