Narrative:

Prior to departing runway 32 at dts; I monitored unicom frequency. As airport was busy. When #1 for takeoff; called departure control several times #1 radio (no luck). Switched to #2 radio which has a higher tail-mounted antenna and works better at remote locations. Contact was made and I was told to stand by for release as another IFR was inbound and it seemed as it would be 3-4 mins before I could tune #1 radio to unicom frequency. Approach control advised we were released and given a heading and climb to altitude. I visually checked and saw traffic on final that looked to be 2-3 mi out (only saw lights not aircraft). I pulled onto runway and took off but made no unicom call prior to departure. On climb out I heard an aircraft had to make a go around because he was almost ready to land when I took off. Evidently; I missed him in my visual scan and most certainly should have called on unicom my departure intentions. I let a hurry-up situation override the needed safety of a unicom departure call.

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Original NASA ASRS Text

Title: AFTER CHANGING RADIOS TO OBTAIN AN IFR RELEASE; C525 PLT TAKES OFF FROM UNCTLED DTS WITHOUT ADVISING ON CTAF. OTHER ACFT ON SHORT FINAL MAKES GAR TO AVOID A CONFLICT.

Narrative: PRIOR TO DEPARTING RWY 32 AT DTS; I MONITORED UNICOM FREQ. AS ARPT WAS BUSY. WHEN #1 FOR TKOF; CALLED DEP CTL SEVERAL TIMES #1 RADIO (NO LUCK). SWITCHED TO #2 RADIO WHICH HAS A HIGHER TAIL-MOUNTED ANTENNA AND WORKS BETTER AT REMOTE LOCATIONS. CONTACT WAS MADE AND I WAS TOLD TO STAND BY FOR RELEASE AS ANOTHER IFR WAS INBOUND AND IT SEEMED AS IT WOULD BE 3-4 MINS BEFORE I COULD TUNE #1 RADIO TO UNICOM FREQ. APCH CTL ADVISED WE WERE RELEASED AND GIVEN A HDG AND CLB TO ALT. I VISUALLY CHKED AND SAW TFC ON FINAL THAT LOOKED TO BE 2-3 MI OUT (ONLY SAW LIGHTS NOT ACFT). I PULLED ONTO RWY AND TOOK OFF BUT MADE NO UNICOM CALL PRIOR TO DEP. ON CLBOUT I HEARD AN ACFT HAD TO MAKE A GAR BECAUSE HE WAS ALMOST READY TO LAND WHEN I TOOK OFF. EVIDENTLY; I MISSED HIM IN MY VISUAL SCAN AND MOST CERTAINLY SHOULD HAVE CALLED ON UNICOM MY DEP INTENTIONS. I LET A HURRY-UP SITUATION OVERRIDE THE NEEDED SAFETY OF A UNICOM DEP CALL.

Data retrieved from NASA's ASRS site as of January 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.