Takeoff without tower clearance.

Attributes
ACN	302756
Time
Date	199504
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : jln
State Reference	MO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Jetstream 31
Operating Under FAR Part	Part 135
Flight Phase	climbout : takeoff ground : holding ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8200
ASRS Report	302756
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	incursion : runway non adherence : far non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Early morning following reduced rest overnight, ATC tower was ground and local traffic controller, hardly ever any traffic at jln this time of day. Prior to reaching runway 13, tower advised position and hold. I acknowledged and we would need 60 seconds for checks and were ready to go. As we were taxiing onto the runway, clearing checks called and checklist calls were being made. Tower called again with 'cleared onto and hold runway 13.' I thought he said 'cleared to go.' power check was made, lights all came on for recognition, takeoff was normal. On climb out tower said he didn't clear us for takeoff, only position and hold. I should not have allowed ATC to interfere with call of checklist or rushing us onto the runway for departure. Too many conflicts with 'position and hold' clrncs can arise.

Original NASA ASRS Text

Title: TKOF WITHOUT TWR CLRNC.

Narrative: EARLY MORNING FOLLOWING REDUCED REST OVERNIGHT, ATC TWR WAS GND AND LCL TFC CTLR, HARDLY EVER ANY TFC AT JLN THIS TIME OF DAY. PRIOR TO REACHING RWY 13, TWR ADVISED POS AND HOLD. I ACKNOWLEDGED AND WE WOULD NEED 60 SECONDS FOR CHKS AND WERE READY TO GO. AS WE WERE TAXIING ONTO THE RWY, CLRING CHKS CALLED AND CHKLIST CALLS WERE BEING MADE. TWR CALLED AGAIN WITH 'CLRED ONTO AND HOLD RWY 13.' I THOUGHT HE SAID 'CLRED TO GO.' PWR CHK WAS MADE, LIGHTS ALL CAME ON FOR RECOGNITION, TKOF WAS NORMAL. ON CLBOUT TWR SAID HE DIDN'T CLR US FOR TKOF, ONLY POS AND HOLD. I SHOULD NOT HAVE ALLOWED ATC TO INTERFERE WITH CALL OF CHKLIST OR RUSHING US ONTO THE RWY FOR DEP. TOO MANY CONFLICTS WITH 'POS AND HOLD' CLRNCS CAN ARISE.

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.