Narrative:

IFR training cross country flight with cfii in right seat. Cou tower closed prior to departure. Obtained ATIS/ASOS information and contacted mizzou approach. Obtained IFR clearance on ground: as filed, climb and maintain 4000 ft, and were given transponder code. Advised mizzou approach taxiing from ramp to runway 31 for departure. Recall being advised to 'advise this frequency when airborne and clear of the area.' contacted mizzou approach when airborne and advised departed cou, leaving 1500 ft for 4000 ft, proceeding direct franc. Controller advised of VFR traffic targets and repeatedly asked 'didn't I tell you to advise when ready to depart cou runway 31?' to which we responded we didn't recall. Although notification to controller wasn't given, we were pretty sure that we were advised to call once airborne, and were busy with taxi, navigation preparation, run-up, and communications with FSS. Handoffs and flight continued uneventfully.

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Original NASA ASRS Text

Title: PA28 PLT AND INSTRUCTOR DEPARTING COU IFR AND FAILED TO OBTAIN RELEASE BEFORE TKOF AS INSTRUCTED.

Narrative: IFR TRAINING XCOUNTRY FLT WITH CFII IN R SEAT. COU TWR CLOSED PRIOR TO DEP. OBTAINED ATIS/ASOS INFO AND CONTACTED MIZZOU APCH. OBTAINED IFR CLRNC ON GND: AS FILED, CLB AND MAINTAIN 4000 FT, AND WERE GIVEN XPONDER CODE. ADVISED MIZZOU APCH TAXIING FROM RAMP TO RWY 31 FOR DEP. RECALL BEING ADVISED TO 'ADVISE THIS FREQ WHEN AIRBORNE AND CLR OF THE AREA.' CONTACTED MIZZOU APCH WHEN AIRBORNE AND ADVISED DEPARTED COU, LEAVING 1500 FT FOR 4000 FT, PROCEEDING DIRECT FRANC. CTLR ADVISED OF VFR TFC TARGETS AND REPEATEDLY ASKED 'DIDN'T I TELL YOU TO ADVISE WHEN READY TO DEPART COU RWY 31?' TO WHICH WE RESPONDED WE DIDN'T RECALL. ALTHOUGH NOTIFICATION TO CTLR WASN'T GIVEN, WE WERE PRETTY SURE THAT WE WERE ADVISED TO CALL ONCE AIRBORNE, AND WERE BUSY WITH TAXI, NAV PREPARATION, RUN-UP, AND COMS WITH FSS. HDOFS AND FLT CONTINUED UNEVENTFULLY.

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.