Narrative:

I filed an IFR clearance from front range airport, an uncontrolled airport in denver. I read back the clearance but did not read back 'hold for release.' the controller and I got into several discussions about which runway to use. He asked that I not use runway 26. The controller did not correct my readback when I failed to include the 'hold for release' instructions. I had not copied down the 'hold for release' instruction. During my taxi, I attempted to contact ZDV 3 times on the assigned frequency. ZDV did not respond. Since this was my first time into front range, I thought that denver radio may not work on the ground. I took off runway 35. At 500 ft AGL, I contacted ZDV. At this point, I was below class B airspace. The controller gave me a heading and told me to maintain 7000 ft. He then asked me to call the operations supervisor upon the completion of my trip. Upon landing, I contacted him. He stated that he would not report this as an incident because there were no other planes involved (the plane has TCASII). The controller said if I had said I was VFR when I first contacted ZDV because I was below 7000 ft there would have been no issue. But since I had filed IFR, I was considered IFR from departure. I should not have departed without contacting ZDV, even though I tried 3 times on the ground. If the controller had corrected me at the time of the readback instructions, there would have been no issue.

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Original NASA ASRS Text

Title: CAPT OF A C550 TOOK OFF ON AN IFR CLRNC AT A NON CTLED ARPT PRIOR TO BEING RELEASED.

Narrative: I FILED AN IFR CLRNC FROM FRONT RANGE ARPT, AN UNCTLED ARPT IN DENVER. I READ BACK THE CLRNC BUT DID NOT READ BACK 'HOLD FOR RELEASE.' THE CTLR AND I GOT INTO SEVERAL DISCUSSIONS ABOUT WHICH RWY TO USE. HE ASKED THAT I NOT USE RWY 26. THE CTLR DID NOT CORRECT MY READBACK WHEN I FAILED TO INCLUDE THE 'HOLD FOR RELEASE' INSTRUCTIONS. I HAD NOT COPIED DOWN THE 'HOLD FOR RELEASE' INSTRUCTION. DURING MY TAXI, I ATTEMPTED TO CONTACT ZDV 3 TIMES ON THE ASSIGNED FREQ. ZDV DID NOT RESPOND. SINCE THIS WAS MY FIRST TIME INTO FRONT RANGE, I THOUGHT THAT DENVER RADIO MAY NOT WORK ON THE GND. I TOOK OFF RWY 35. AT 500 FT AGL, I CONTACTED ZDV. AT THIS POINT, I WAS BELOW CLASS B AIRSPACE. THE CTLR GAVE ME A HDG AND TOLD ME TO MAINTAIN 7000 FT. HE THEN ASKED ME TO CALL THE OPS SUPVR UPON THE COMPLETION OF MY TRIP. UPON LNDG, I CONTACTED HIM. HE STATED THAT HE WOULD NOT RPT THIS AS AN INCIDENT BECAUSE THERE WERE NO OTHER PLANES INVOLVED (THE PLANE HAS TCASII). THE CTLR SAID IF I HAD SAID I WAS VFR WHEN I FIRST CONTACTED ZDV BECAUSE I WAS BELOW 7000 FT THERE WOULD HAVE BEEN NO ISSUE. BUT SINCE I HAD FILED IFR, I WAS CONSIDERED IFR FROM DEP. I SHOULD NOT HAVE DEPARTED WITHOUT CONTACTING ZDV, EVEN THOUGH I TRIED 3 TIMES ON THE GND. IF THE CTLR HAD CORRECTED ME AT THE TIME OF THE READBACK INSTRUCTIONS, THERE WOULD HAVE BEEN NO ISSUE.

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.