A PA24-250 CFI takes off before he is released for an IFR departure from bwi departure controller at a non tower airport at fdk, md.

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Attributes
ACN	528892
Time
Date	200110
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : fdk.airport
State Reference	MD
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	PA-24 Comanche
Operating Under FAR Part	Part 91
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : multi engine pilot : cfi pilot : commercial
Experience	flight time last 90 days : 40 flight time total : 3360 flight time type : 2300
ASRS Report	528892
Person 2
Affiliation	government : faa
Function	controller : local
Events
Anomaly	non adherence : far non adherence : published procedure non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Airspace Structure Environmental Factor Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Copied IFR clearance while taxiing to runway 5 at frederick, md. Very busy with steady VFR takeoffs and lndgs and sailplane activity on runway 30. ATC asked me how soon I would be ready for takeoff. I said about 1 min, and I was ready in 1 min and took runway 5 and headed for EMI VOR per clearance and called baltimore departure. They told me I hadn't been released, but gave me an altitude to climb to. I didn't hear them tell me to 'hold till released.' I think the heavy activity may have caused me to change frequency too quickly and perhaps miss some communications.

Original NASA ASRS Text

Title: A PA24-250 CFI TAKES OFF BEFORE HE IS RELEASED FOR AN IFR DEP FROM BWI DEP CTLR AT A NON TWR ARPT AT FDK, MD.

Narrative: COPIED IFR CLRNC WHILE TAXIING TO RWY 5 AT FREDERICK, MD. VERY BUSY WITH STEADY VFR TKOFS AND LNDGS AND SAILPLANE ACTIVITY ON RWY 30. ATC ASKED ME HOW SOON I WOULD BE READY FOR TKOF. I SAID ABOUT 1 MIN, AND I WAS READY IN 1 MIN AND TOOK RWY 5 AND HEADED FOR EMI VOR PER CLRNC AND CALLED BALTIMORE DEP. THEY TOLD ME I HADN'T BEEN RELEASED, BUT GAVE ME AN ALT TO CLB TO. I DIDN'T HEAR THEM TELL ME TO 'HOLD TILL RELEASED.' I THINK THE HVY ACTIVITY MAY HAVE CAUSED ME TO CHANGE FREQ TOO QUICKLY AND PERHAPS MISS SOME COMS.

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.