Narrative:

Established radio contact with lunken control tower. Tower controller confused with aircraft call sign, multiple helicopters operating at the time. Lunken tower then had made I. D. Of each helicopter correct. 2 aircraft were in flight, one departing from lunken, second, my aircraft. Told lunken tower my position, northwest of field at 2000 ft MSL, destination mt. Sterling, ky on course heading 135 degree initially then change to 165 degree using GPS. At this time I was 1.0 NM west of airport, when tower advised me of a jet departing lunken. Did not have visual of jet aircraft because of my heading from the runway which the jet was climbing out, off runway 25. My crew members then picked up visual of jet. Tower then gave me evasive instructions to turn right immediately. I did. The new heading was 180 degree. No further incident occurred. Tower at lunken then gave me frequency change to cincinnati approach controller. Contacted app controller, squawked code, then departed class B airspace. 1) traffic area where lunken airport class D located in a depression between two hillsides, the control tower is located southwest of the field, which might make it difficult for controllers to see aircraft coming from the northwest, where the heliport is located. Additionally to this factor, there are multiple radio towers in the surrounding area as well. So this could be a fairly significant obstruction to lunken's control tower. 2) lunken airport and cincinnati app controller should establish corridor procedures for helicopters to use in the future. There is a high volume of helicopters in this particular area. 3) the heliport roof area is within the class D airspace of lunken. Class B in this area starts at 3000-8000 ft. Lunken is sfc-3000 ft. Callback conversation with reporter revealed the following information: reporter stated that the miss distance from the jet departure was 300 ft horizontal and 200 ft vertical.

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Original NASA ASRS Text

Title: HELICOPTER XING KLUK FROM W TO SE HAS A NMAC WITH A JET ACFT DEPARTING W.

Narrative: ESTABLISHED RADIO CONTACT WITH LUNKEN CTL TWR. TWR CTLR CONFUSED WITH ACFT CALL SIGN, MULTIPLE HELICOPTERS OPERATING AT THE TIME. LUNKEN TWR THEN HAD MADE I. D. OF EACH HELICOPTER CORRECT. 2 ACFT WERE IN FLT, ONE DEPARTING FROM LUNKEN, SECOND, MY ACFT. TOLD LUNKEN TWR MY POS, NW OF FIELD AT 2000 FT MSL, DESTINATION MT. STERLING, KY ON COURSE HDG 135 DEG INITIALLY THEN CHANGE TO 165 DEG USING GPS. AT THIS TIME I WAS 1.0 NM W OF ARPT, WHEN TWR ADVISED ME OF A JET DEPARTING LUNKEN. DID NOT HAVE VISUAL OF JET ACFT BECAUSE OF MY HEADING FROM THE RWY WHICH THE JET WAS CLBING OUT, OFF RWY 25. MY CREW MEMBERS THEN PICKED UP VISUAL OF JET. TWR THEN GAVE ME EVASIVE INSTRUCTIONS TO TURN R IMMEDIATELY. I DID. THE NEW HDG WAS 180 DEG. NO FURTHER INCIDENT OCCURRED. TWR AT LUNKEN THEN GAVE ME FREQ CHANGE TO CINCINNATI APCH CTLR. CONTACTED APP CTLR, SQUAWKED CODE, THEN DEPARTED CLASS B AIRSPACE. 1) TFC AREA WHERE LUNKEN ARPT CLASS D LOCATED IN A DEPRESSION BTWN TWO HILLSIDES, THE CTL TWR IS LOCATED SW OF THE FIELD, WHICH MIGHT MAKE IT DIFFICULT FOR CTLRS TO SEE ACFT COMING FROM THE NW, WHERE THE HELIPORT IS LOCATED. ADDITIONALLY TO THIS FACTOR, THERE ARE MULTIPLE RADIO TWRS IN THE SURROUNDING AREA AS WELL. SO THIS COULD BE A FAIRLY SIGNIFICANT OBSTRUCTION TO LUNKEN'S CTL TWR. 2) LUNKEN ARPT AND CINCINNATI APP CTLR SHOULD ESTABLISH CORRIDOR PROCS FOR HELICOPTERS TO USE IN THE FUTURE. THERE IS A HIGH VOLUME OF HELICOPTERS IN THIS PARTICULAR AREA. 3) THE HELIPORT ROOF AREA IS WITHIN THE CLASS D AIRSPACE OF LUNKEN. CLASS B IN THIS AREA STARTS AT 3000-8000 FT. LUNKEN IS SFC-3000 FT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT THE MISS DISTANCE FROM THE JET DEPARTURE WAS 300 FT HORIZONTAL AND 200 FT VERTICAL.

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.