Narrative:

We were cleared to land #1. Our only traffic was a jet preparing for takeoff. About 1.5 mi from end of runway, another aircraft (who was not talking to the tower) came over the top of us, clearing us by what seemed to be 40-50 ft. I don't recall the aircraft ever talking to tower.

Google
 

Original NASA ASRS Text

Title: NMAC ON SHORT FINAL WHEN A C177RG OVERFLIES A PA28 WHO HAD BEEN CLRED FOR LNDG AT BED, MA.

Narrative: WE WERE CLRED TO LAND #1. OUR ONLY TFC WAS A JET PREPARING FOR TKOF. ABOUT 1.5 MI FROM END OF RWY, ANOTHER ACFT (WHO WAS NOT TALKING TO THE TWR) CAME OVER THE TOP OF US, CLRING US BY WHAT SEEMED TO BE 40-50 FT. I DON'T RECALL THE ACFT EVER TALKING TO TWR.

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.