Narrative:

I was IFR from pdx-PDT. I was descending into PDT and chinook approach informed me that there was traffic on the ILS runway 25 outside foris marker beacon and I was #2 for the airport. He vectored me 5 degrees left for the visual runway 11. When I reported airport in sight, he handed me off to tower. As I switched frequencys I heard someone cleared to taxi to parking and assumed (mistakenly) that it was the ILS traffic. Approach control made no mention of expecting traffic outbound on the missed approach and tower did not mention traffic to me either. I had initially called tower 10 mi west of PDT VOR and was asked to report abeam the VORTAC for right base runway 11. When I was 2 NM northwest of the VOR, I heard someone ask for a frequency change. About 10 seconds later or less, a piper arrow passed opposite direction. Maybe 100 ft above me and 3 wing span lengths (roughly) off my right wing. I had had no warning from approach or tower and had no time to react. I recognized the other airplane and the voice of the pilot. I called him later and he said he never saw me either. I should have been scanning a bit more, but there was no relative motion to catch my eye. I think it could have been avoided if either chinook approach or tower had warned me to watch for traffic outbound on missed approach.

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Original NASA ASRS Text

Title: SMT PLT HAD AN NMAC WITH A PA28 IN PDT CLASS D AIRSPACE. THE ATCT LCL CTLR DID NOT ISSUE ANY TA'S.

Narrative: I WAS IFR FROM PDX-PDT. I WAS DSNDING INTO PDT AND CHINOOK APCH INFORMED ME THAT THERE WAS TFC ON THE ILS RWY 25 OUTSIDE FORIS MARKER BEACON AND I WAS #2 FOR THE ARPT. HE VECTORED ME 5 DEGS L FOR THE VISUAL RWY 11. WHEN I RPTED ARPT IN SIGHT, HE HANDED ME OFF TO TWR. AS I SWITCHED FREQS I HEARD SOMEONE CLRED TO TAXI TO PARKING AND ASSUMED (MISTAKENLY) THAT IT WAS THE ILS TFC. APCH CTL MADE NO MENTION OF EXPECTING TFC OUTBOUND ON THE MISSED APCH AND TWR DID NOT MENTION TFC TO ME EITHER. I HAD INITIALLY CALLED TWR 10 MI W OF PDT VOR AND WAS ASKED TO RPT ABEAM THE VORTAC FOR R BASE RWY 11. WHEN I WAS 2 NM NW OF THE VOR, I HEARD SOMEONE ASK FOR A FREQ CHANGE. ABOUT 10 SECONDS LATER OR LESS, A PIPER ARROW PASSED OPPOSITE DIRECTION. MAYBE 100 FT ABOVE ME AND 3 WING SPAN LENGTHS (ROUGHLY) OFF MY R WING. I HAD HAD NO WARNING FROM APCH OR TWR AND HAD NO TIME TO REACT. I RECOGNIZED THE OTHER AIRPLANE AND THE VOICE OF THE PLT. I CALLED HIM LATER AND HE SAID HE NEVER SAW ME EITHER. I SHOULD HAVE BEEN SCANNING A BIT MORE, BUT THERE WAS NO RELATIVE MOTION TO CATCH MY EYE. I THINK IT COULD HAVE BEEN AVOIDED IF EITHER CHINOOK APCH OR TWR HAD WARNED ME TO WATCH FOR TFC OUTBOUND ON MISSED APCH.

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.