Narrative:

C130 on VOR 23 approach to 2i0 airport; switched to advisory frequency. On departure; pilot asked if we had been talking to anyone else at that airport during their approach; advised that we had not. C130 pilot then stated that what appeared to be an aa-1 or aa-5 landed immediately behind them; and that the other pilot hadn't stated anything on the advisory frequency at any time. From what I understand; the pilot of the C130 saw the other aircraft just as they touched down; and it was an unwelcome surprise with the WX as it was. Earlier in the day at a satellite airport; I noticed a VFR tag hovering around and inside of the owb class D airspace; I inquired owb tower if they were talking to this aircraft. They were not. The airport was IMC; IMC approachs were being conducted at this time. I understand that owb (contract tower) is investigating this incident also. My point: GA pilots are buzzing around airports that are IMC; and worse; not communicating their presence (I figure for the obvious reasons). Why they are in the air at these times; I can only guess; but I hope you can get a message out to these people to broadcast their presence; that they monitor the CTAF; and let others know that they are in the vicinity. If they are lost; we will find them; we will help -- but don't just blunder around; it serves no one; and it will only lead to a mishap.

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Original NASA ASRS Text

Title: EVV CTLR DESCRIBED NMAC WHEN 2I0 IFR C130 DEP CONFLICTED WITH UNKNOWN TFC; VOICING CONCERN REGARDING VFR OPS IN MARGINAL WX.

Narrative: C130 ON VOR 23 APCH TO 2I0 ARPT; SWITCHED TO ADVISORY FREQ. ON DEP; PLT ASKED IF WE HAD BEEN TALKING TO ANYONE ELSE AT THAT ARPT DURING THEIR APCH; ADVISED THAT WE HAD NOT. C130 PLT THEN STATED THAT WHAT APPEARED TO BE AN AA-1 OR AA-5 LANDED IMMEDIATELY BEHIND THEM; AND THAT THE OTHER PLT HADN'T STATED ANYTHING ON THE ADVISORY FREQ AT ANY TIME. FROM WHAT I UNDERSTAND; THE PLT OF THE C130 SAW THE OTHER ACFT JUST AS THEY TOUCHED DOWN; AND IT WAS AN UNWELCOME SURPRISE WITH THE WX AS IT WAS. EARLIER IN THE DAY AT A SATELLITE ARPT; I NOTICED A VFR TAG HOVERING AROUND AND INSIDE OF THE OWB CLASS D AIRSPACE; I INQUIRED OWB TWR IF THEY WERE TALKING TO THIS ACFT. THEY WERE NOT. THE ARPT WAS IMC; IMC APCHS WERE BEING CONDUCTED AT THIS TIME. I UNDERSTAND THAT OWB (CONTRACT TWR) IS INVESTIGATING THIS INCIDENT ALSO. MY POINT: GA PLTS ARE BUZZING AROUND ARPTS THAT ARE IMC; AND WORSE; NOT COMMUNICATING THEIR PRESENCE (I FIGURE FOR THE OBVIOUS REASONS). WHY THEY ARE IN THE AIR AT THESE TIMES; I CAN ONLY GUESS; BUT I HOPE YOU CAN GET A MESSAGE OUT TO THESE PEOPLE TO BROADCAST THEIR PRESENCE; THAT THEY MONITOR THE CTAF; AND LET OTHERS KNOW THAT THEY ARE IN THE VICINITY. IF THEY ARE LOST; WE WILL FIND THEM; WE WILL HELP -- BUT DON'T JUST BLUNDER AROUND; IT SERVES NO ONE; AND IT WILL ONLY LEAD TO A MISHAP.

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.