C210 pilot was told he had deviated from departure clearance at gpt.

Attributes
ACN	478250
Time
Date	200007
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : gpt.airport
State Reference	MS
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : gpt.tracon
Operator	general aviation : personal
Make Model Name	Cessna 120
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 15 flight time total : 220 flight time type : 25
ASRS Report	478250
Person 2
Affiliation	government : faa
Function	controller : departure
Qualification	controller : non radar
Events
Anomaly	non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued advisory none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I received very confusing departure clearance. I had received IFR clearance and was cleared for takeoff. I thought I had complied and was told that I did not -- communication from ATC was less than clear.

Original NASA ASRS Text

Title: C210 PLT WAS TOLD HE HAD DEVIATED FROM DEP CLRNC AT GPT.

Narrative: I RECEIVED VERY CONFUSING DEP CLRNC. I HAD RECEIVED IFR CLRNC AND WAS CLRED FOR TKOF. I THOUGHT I HAD COMPLIED AND WAS TOLD THAT I DID NOT -- COM FROM ATC WAS LESS THAN CLR.

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.