Single pilot, on taxi out crossed active runway.

Attributes
ACN	492230
Time
Date	200011
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : stp.airport
State Reference	MN
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Weather Elements	Snow
Light	Daylight
Aircraft 1
Controlling Facilities	tower : stp.tower
Operator	general aviation : personal
Make Model Name	PA-23-250 Turbo Aztec
Operating Under FAR Part	Part 91
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : cfi pilot : commercial pilot : instrument
Experience	controller non radar : 1.5 controller radar : 1.5 flight time last 90 days : 220 flight time total : 650 flight time type : 14
ASRS Report	492230
Person 2
Affiliation	government : faa
Function	controller : ground
Qualification	controller : non radar
Events
Anomaly	incursion : runway non adherence : clearance non adherence : published procedure non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted none taken : detected after the fact
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I received my clearance on the ground at stp for an IFR flight from stp to eau at approximately XA00 local. I then received a taxi clearance to 'taxi to runway 32' and read it back. I then proceeded to taxi to runway 32 which the route I chose had me taxiing across runway 32. I assumed I was cleared across runway 32 to the departure end. I then realized I should have verified that I was cleared across runway 32 which I later realized I wasn't cleared across runway 32, but up to it only. One of the contributing factors was the unclr taxi instructions of which way to taxi to runway 32. Another factor was my misunderstanding of the instructions to taxi and not verifying the route of which to taxi.

Original NASA ASRS Text

Title: SINGLE PLT, ON TAXI OUT CROSSED ACTIVE RWY.

Narrative: I RECEIVED MY CLRNC ON THE GND AT STP FOR AN IFR FLT FROM STP TO EAU AT APPROX XA00 LCL. I THEN RECEIVED A TAXI CLRNC TO 'TAXI TO RWY 32' AND READ IT BACK. I THEN PROCEEDED TO TAXI TO RWY 32 WHICH THE RTE I CHOSE HAD ME TAXIING ACROSS RWY 32. I ASSUMED I WAS CLRED ACROSS RWY 32 TO THE DEP END. I THEN REALIZED I SHOULD HAVE VERIFIED THAT I WAS CLRED ACROSS RWY 32 WHICH I LATER REALIZED I WASN'T CLRED ACROSS RWY 32, BUT UP TO IT ONLY. ONE OF THE CONTRIBUTING FACTORS WAS THE UNCLR TAXI INSTRUCTIONS OF WHICH WAY TO TAXI TO RWY 32. ANOTHER FACTOR WAS MY MISUNDERSTANDING OF THE INSTRUCTIONS TO TAXI AND NOT VERIFYING THE RTE OF WHICH TO TAXI.

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.