Narrative:

I was on a fiber optic cable patrol flight. I had called bna approach and was being given radar services. About 8 mi after radar contact approach asked me if another plane was flying with me, to which I answered no. He then advised me of traffic at my altitude 1/4 mi at my 6 O'clock position and flying the same direction. I kicked the tail around to look behind me but did not see anything until he passed my left wing at 50 ft. It was a red/white PA-31 with winglets. That aircraft then continued on and landed at cornelia fort airport. I do not believe the other aircraft saw me. We were both below the outer ring of the class C airspace so he did not have to be in contact with bna approach. I later tried to contact him on 122.8 but never heard a transmission, even when he was in the pattern at cornelia fort. To avoid the situation I feel that ATC could have advised me earlier of the traffic since they were not busy at the time and trying to see someone directly behind you is difficult. I also feel that the other pilot should have been in contact with ATC since it is a relatively busy airspace and he had a fast piston twin airplane.

Google
 

Original NASA ASRS Text

Title: NMAC.

Narrative: I WAS ON A FIBER OPTIC CABLE PATROL FLT. I HAD CALLED BNA APCH AND WAS BEING GIVEN RADAR SVCS. ABOUT 8 MI AFTER RADAR CONTACT APCH ASKED ME IF ANOTHER PLANE WAS FLYING WITH ME, TO WHICH I ANSWERED NO. HE THEN ADVISED ME OF TFC AT MY ALT 1/4 MI AT MY 6 O'CLOCK POS AND FLYING THE SAME DIRECTION. I KICKED THE TAIL AROUND TO LOOK BEHIND ME BUT DID NOT SEE ANYTHING UNTIL HE PASSED MY L WING AT 50 FT. IT WAS A RED/WHITE PA-31 WITH WINGLETS. THAT ACFT THEN CONTINUED ON AND LANDED AT CORNELIA FORT ARPT. I DO NOT BELIEVE THE OTHER ACFT SAW ME. WE WERE BOTH BELOW THE OUTER RING OF THE CLASS C AIRSPACE SO HE DID NOT HAVE TO BE IN CONTACT WITH BNA APCH. I LATER TRIED TO CONTACT HIM ON 122.8 BUT NEVER HEARD A XMISSION, EVEN WHEN HE WAS IN THE PATTERN AT CORNELIA FORT. TO AVOID THE SIT I FEEL THAT ATC COULD HAVE ADVISED ME EARLIER OF THE TFC SINCE THEY WERE NOT BUSY AT THE TIME AND TRYING TO SEE SOMEONE DIRECTLY BEHIND YOU IS DIFFICULT. I ALSO FEEL THAT THE OTHER PLT SHOULD HAVE BEEN IN CONTACT WITH ATC SINCE IT IS A RELATIVELY BUSY AIRSPACE AND HE HAD A FAST PISTON TWIN AIRPLANE.

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.