Pilot takes active runway without clearance. Assuming he was issued takeoff clearance.

Attributes
ACN	547565
Time
Date	200205
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : pub.airport
State Reference	CO
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	PA-46 Malibu
Operating Under FAR Part	Part 91
Flight Phase	ground : taxi
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 74 flight time total : 3437 flight time type : 633
ASRS Report	547565
Person 2
Affiliation	other
Function	observation : observer
Events
Anomaly	incursion : runway non adherence : clearance non adherence : far
Independent Detector	other controllera
Resolutory Action	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:

After doing run up on taxiway at end of active runway #8 at publication, I held short of runway 08 and contacted tower. I then allowed myself to be distracted (discussing something about the operation of the turboprop engine with the pilot/passenger in the right seat) then, thinking that I had been cleared for takeoff, I taxied onto the runway. I was immediately told by tower that I had not been cleared to take off and, he pointed out to me (absolutely correctly) that I had made a serious mistake! I have read many articles about 'runway incursions' but never thought that I could be stupid enough to make one. I am really embarrassed and ashamed. I have proven to myself that flying experience is no guarantee against basic mistakes. Perhaps the clear WX/no wind saturday morning lulled me into complacency. In the future I will remember that I am a pilot (not a tour guide who is there to instruct/entertain the passenger), and keep cockpit conversation to a minimum especially during critical phases of the flight.

Original NASA ASRS Text

Title: PLT TAKES ACTIVE RWY WITHOUT CLRNC. ASSUMING HE WAS ISSUED TKOF CLRNC.

Narrative: AFTER DOING RUN UP ON TXWY AT END OF ACTIVE RWY #8 AT PUB, I HELD SHORT OF RWY 08 AND CONTACTED TWR. I THEN ALLOWED MYSELF TO BE DISTRACTED (DISCUSSING SOMETHING ABOUT THE OP OF THE TURBOPROP ENGINE WITH THE PLT/PAX IN THE R SEAT) THEN, THINKING THAT I HAD BEEN CLRED FOR TAKEOFF, I TAXIED ONTO THE RWY. I WAS IMMEDIATELY TOLD BY TWR THAT I HAD NOT BEEN CLRED TO TAKE OFF AND, HE POINTED OUT TO ME (ABSOLUTELY CORRECTLY) THAT I HAD MADE A SERIOUS MISTAKE! I HAVE READ MANY ARTICLES ABOUT 'RWY INCURSIONS' BUT NEVER THOUGHT THAT I COULD BE STUPID ENOUGH TO MAKE ONE. I AM REALLY EMBARRASSED AND ASHAMED. I HAVE PROVEN TO MYSELF THAT FLYING EXPERIENCE IS NO GUARANTEE AGAINST BASIC MISTAKES. PERHAPS THE CLEAR WX/NO WIND SATURDAY MORNING LULLED ME INTO COMPLACENCY. IN THE FUTURE I WILL REMEMBER THAT I AM A PLT (NOT A TOUR GUIDE WHO IS THERE TO INSTRUCT/ENTERTAIN THE PAX), AND KEEP COCKPIT CONVERSATION TO A MINIMUM ESPECIALLY DURING CRITICAL PHASES OF THE FLT.

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.