Narrative:

As we extered left downwind for runway 4, encountered high-wing aircraft apparently flying upwind (or maybe downwind for runway 22) at approximately 950 ft (pattern altitude is 810 ft). We made request on unicom for airport advisory 10 mi north, announced intention to enter left downwind runway 4 at 5 mi north after TA and aircraft viewed in pattern for runway 4. Took some evasive action early -- we had plane in sight all the way. Caused us to take a wide downwind, after which intruder took close downwind. CFI re-announced our intention, other plane fell in behind us and announced second for runway 4.

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Original NASA ASRS Text

Title: NMAC IN UNCTLED TFC PATTERN BY A TRAINING STUDENT PLT WITH INSTRUCTOR AND AN UNKNOWN SMA SEL FLYING THE DOWNWIND LEG IN THE OPPOSITE DIRECTION.

Narrative: AS WE EXTERED L DOWNWIND FOR RWY 4, ENCOUNTERED HIGH-WING ACFT APPARENTLY FLYING UPWIND (OR MAYBE DOWNWIND FOR RWY 22) AT APPROX 950 FT (PATTERN ALT IS 810 FT). WE MADE REQUEST ON UNICOM FOR ARPT ADVISORY 10 MI N, ANNOUNCED INTENTION TO ENTER L DOWNWIND RWY 4 AT 5 MI N AFTER TA AND ACFT VIEWED IN PATTERN FOR RWY 4. TOOK SOME EVASIVE ACTION EARLY -- WE HAD PLANE IN SIGHT ALL THE WAY. CAUSED US TO TAKE A WIDE DOWNWIND, AFTER WHICH INTRUDER TOOK CLOSE DOWNWIND. CFI RE-ANNOUNCED OUR INTENTION, OTHER PLANE FELL IN BEHIND US AND ANNOUNCED SECOND FOR RWY 4.

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.