Narrative:

While on final approach to martin state airport an unknown cream colored small aircraft entered the air traffic area and passed over my aircraft from the 1 O'clock position to the 7 O'clock position approximately 25 ft above my aircraft. The unknown aircraft had no position lights or landing lights and did not talk to the tower. Baltimore approach reported that the aircraft was not indicating a transponder code and they reported it dropped off radar 5 mi west of martin state airport. The only place it could have gone was essex sky park 5 mi southwest of martin. It was dark but my landing light lit up the under side of the aircraft, and there was no visible identifiers, only a cream color bottom. Both the tower at martin and bwi were advised as soon as it happened.

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Original NASA ASRS Text

Title: CLOSE PROX GOV SMA ON HIGH FINAL FOR MTN AND UNKNOWN GA SMA XING THE ATA AT NIGHT WITH NO LIGHTS.

Narrative: WHILE ON FINAL APCH TO MARTIN STATE ARPT AN UNKNOWN CREAM COLORED SMA ENTERED THE ATA AND PASSED OVER MY ACFT FROM THE 1 O'CLOCK POS TO THE 7 O'CLOCK POS APPROX 25 FT ABOVE MY ACFT. THE UNKNOWN ACFT HAD NO POS LIGHTS OR LNDG LIGHTS AND DID NOT TALK TO THE TWR. BALTIMORE APCH RPTED THAT THE ACFT WAS NOT INDICATING A TRANSPONDER CODE AND THEY RPTED IT DROPPED OFF RADAR 5 MI W OF MARTIN STATE ARPT. THE ONLY PLACE IT COULD HAVE GONE WAS ESSEX SKY PARK 5 MI SW OF MARTIN. IT WAS DARK BUT MY LNDG LIGHT LIT UP THE UNDER SIDE OF THE ACFT, AND THERE WAS NO VISIBLE IDENTIFIERS, ONLY A CREAM COLOR BOTTOM. BOTH THE TWR AT MARTIN AND BWI WERE ADVISED AS SOON AS IT HAPPENED.

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.