Narrative:

Approaching ZZZ municipal to cross midfield at 1500 ft or above on a westerly heading to give way for air carrier Y on 5 mi final. In communication with air carrier Y and giving 2 different position reports of my own. At approximately 2 mi from crossing at altitude of 2200 ft MSL left crew member sees an airplane out of left window. At the same moment she called out I saw the plane. I continued my descent and somehow we did not hit. I turned and saw the plane continue on a northerly heading away from ZZZ. I told the air carrier Y captain of the incident and he said he saw him on TCAS with no communication with the plane; no communication was received by center and no radio calls on ZZZ advisory.

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Original NASA ASRS Text

Title: AS350 HELI HAS NMAC WITH UNIDENTIFIED ACFT WHILE TRANSITING AN ARPT WHOSE TWR WAS CLOSED.

Narrative: APCHING ZZZ MUNI TO CROSS MIDFIELD AT 1500 FT OR ABOVE ON A WESTERLY HDG TO GIVE WAY FOR ACR Y ON 5 MI FINAL. IN COM WITH ACR Y AND GIVING 2 DIFFERENT POS RPTS OF MY OWN. AT APPROX 2 MI FROM XING AT ALT OF 2200 FT MSL L CREW MEMBER SEES AN AIRPLANE OUT OF L WINDOW. AT THE SAME MOMENT SHE CALLED OUT I SAW THE PLANE. I CONTINUED MY DSCNT AND SOMEHOW WE DID NOT HIT. I TURNED AND SAW THE PLANE CONTINUE ON A NORTHERLY HDG AWAY FROM ZZZ. I TOLD THE ACR Y CAPT OF THE INCIDENT AND HE SAID HE SAW HIM ON TCAS WITH NO COM WITH THE PLANE; NO COM WAS RECEIVED BY CTR AND NO RADIO CALLS ON ZZZ ADVISORY.

Data retrieved from NASA's ASRS site as of May 2009 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.