A cessna C210 pilot departed osu without a clearance.

Attributes
ACN	428385
Time
Date	199902
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : osu.airport
State Reference	OH
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : osu.tower
Operator	general aviation : personal
Make Model Name	Cessna 210 Centurion / Turbo Centurion 210C, 210D
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	climbout : takeoff ground : takeoff roll
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial pilot : private
Experience	flight time last 90 days : 47 flight time total : 1970 flight time type : 500
ASRS Report	428385
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	non adherence : published procedure non adherence : far non adherence : clearance
Independent Detector	other controllera
Resolutory Action	aircraft : equipment problem dissipated none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

About XA30 at osu, I received ATIS and got clearance from ground to taxi to runway 27L. I did my runup and final checks. I tried to contact tower on radio #2 and did not get a response from tower on 118.8. I tried 4 or 5 times on radio #2. I then went to radio #1 and tried to contact ground again. I tried to contact ground 2 or 3 times on radio #1. I did not get a response from ground. I then made a dangerous assumption. I assumed the tower had closed down. I went back to radio #2 and announced that I was taking off on runway 27L at osu. My error was I was rushing to get going. I checked for traffic and took off. After I was airborne and about 10 mi from osu, I heard tower trying to contact me. I answered their call. They were breaking up. They asked me to call them on the landline when I landed. I did so. I should have done a better preflight by looking at the airport directory and I would have known the tower closed at XX00. I should have tried to contact ground on the hand microphone. I also should have changed frequencys on both radios. I also should have gone back to ATIS to see if I could hear ATIS. Instead of taking off, I should have taxied back to the ramp and called the tower on landline and asked if they were receiving my calls. I then could have asked them for a clearance to take off on the landline. I should have checked tower for the lights for takeoff and taxiing.

Original NASA ASRS Text

Title: A CESSNA C210 PLT DEPARTED OSU WITHOUT A CLRNC.

Narrative: ABOUT XA30 AT OSU, I RECEIVED ATIS AND GOT CLRNC FROM GND TO TAXI TO RWY 27L. I DID MY RUNUP AND FINAL CHKS. I TRIED TO CONTACT TWR ON RADIO #2 AND DID NOT GET A RESPONSE FROM TWR ON 118.8. I TRIED 4 OR 5 TIMES ON RADIO #2. I THEN WENT TO RADIO #1 AND TRIED TO CONTACT GND AGAIN. I TRIED TO CONTACT GND 2 OR 3 TIMES ON RADIO #1. I DID NOT GET A RESPONSE FROM GND. I THEN MADE A DANGEROUS ASSUMPTION. I ASSUMED THE TWR HAD CLOSED DOWN. I WENT BACK TO RADIO #2 AND ANNOUNCED THAT I WAS TAKING OFF ON RWY 27L AT OSU. MY ERROR WAS I WAS RUSHING TO GET GOING. I CHKED FOR TFC AND TOOK OFF. AFTER I WAS AIRBORNE AND ABOUT 10 MI FROM OSU, I HEARD TWR TRYING TO CONTACT ME. I ANSWERED THEIR CALL. THEY WERE BREAKING UP. THEY ASKED ME TO CALL THEM ON THE LANDLINE WHEN I LANDED. I DID SO. I SHOULD HAVE DONE A BETTER PREFLT BY LOOKING AT THE ARPT DIRECTORY AND I WOULD HAVE KNOWN THE TWR CLOSED AT XX00. I SHOULD HAVE TRIED TO CONTACT GND ON THE HAND MIKE. I ALSO SHOULD HAVE CHANGED FREQS ON BOTH RADIOS. I ALSO SHOULD HAVE GONE BACK TO ATIS TO SEE IF I COULD HEAR ATIS. INSTEAD OF TAKING OFF, I SHOULD HAVE TAXIED BACK TO THE RAMP AND CALLED THE TWR ON LANDLINE AND ASKED IF THEY WERE RECEIVING MY CALLS. I THEN COULD HAVE ASKED THEM FOR A CLRNC TO TAKE OFF ON THE LANDLINE. I SHOULD HAVE CHKED TWR FOR THE LIGHTS FOR TKOF AND TAXIING.

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.