Small aircraft taxies onto runway without clearance to do so.

Attributes
ACN	317680
Time
Date	199510
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : det
State Reference	MI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 70 flight time total : 3300 flight time type : 150
ASRS Report	317680
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	incursion : runway non adherence : far non adherence : clearance
Independent Detector	other controllera
Resolutory Action	other
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was cleared runway 33 from the point that I called up at, which was about 20 ft from the hold short line of the active runway. I called for clearance and taxi instructions on tower frequency and was cleared runway 33. I took the position to takeoff on the runway, not receiving position and hold nor hold short instructions. Tower told me that he did not want me to take the runway, and I immediately offered to clear. He said no problem, just be careful next time and cleared me to takeoff. I apologized again and took off IFR to clt without any problems. I believe that this could have been eliminated had tower been more precise with the instructions. Although I realize that if there is any doubt I am obligated to ask and clear up any confusion, but at the time I felt it was clear. Next time I will ask!

Original NASA ASRS Text

Title: SMA TAXIES ONTO RWY WITHOUT CLRNC TO DO SO.

Narrative: I WAS CLRED RWY 33 FROM THE POINT THAT I CALLED UP AT, WHICH WAS ABOUT 20 FT FROM THE HOLD SHORT LINE OF THE ACTIVE RWY. I CALLED FOR CLRNC AND TAXI INSTRUCTIONS ON TWR FREQ AND WAS CLRED RWY 33. I TOOK THE POS TO TKOF ON THE RWY, NOT RECEIVING POS AND HOLD NOR HOLD SHORT INSTRUCTIONS. TWR TOLD ME THAT HE DID NOT WANT ME TO TAKE THE RWY, AND I IMMEDIATELY OFFERED TO CLR. HE SAID NO PROB, JUST BE CAREFUL NEXT TIME AND CLRED ME TO TKOF. I APOLOGIZED AGAIN AND TOOK OFF IFR TO CLT WITHOUT ANY PROBS. I BELIEVE THAT THIS COULD HAVE BEEN ELIMINATED HAD TWR BEEN MORE PRECISE WITH THE INSTRUCTIONS. ALTHOUGH I REALIZE THAT IF THERE IS ANY DOUBT I AM OBLIGATED TO ASK AND CLR UP ANY CONFUSION, BUT AT THE TIME I FELT IT WAS CLR. NEXT TIME I WILL ASK!

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.