A low time traffic watch pilot taxied across runway 3 without permission at sat.

Attributes
ACN	450530
Time
Date	199910
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sat.airport
State Reference	TX
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sat.tower
Operator	Other
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	ground : taxi
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 21 flight time total : 960 flight time type : 500
ASRS Report	450530
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : clearance non adherence : far non adherence : published procedure
Independent Detector	other controllerb other flight crewa
Resolutory Action	controller : issued new clearance
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:

I contacted ground control (at san antonio) and requested to taxi to runway 3 using taxiway east. Ground control replied, 'taxi runway 3 via taxiway east' (or words to that effect). I responded, '...taxi to runway 3 on taxiway east.' as I looked to my left while taxiing on taxiway east, I observed a large aircraft rolling out on runway 12R. I thought it must be something, then I looked to my left and saw a large aircraft holding short of runway 3. I continued forward believing I was cleared to taxi across runway 3 to the run-up area. By the time I reached the runway, I thought (felt) something was wrong. I thought I didn't ask ground if I was cleared to cross runway 3. This is when ground control radioed and told me I wasn't cleared to taxi across runway 3 but to taxi across runway 3 now to taxiway north, then left to runway 3. This is when I realized I had just violated, I believe, far 91.129I, albeit unintentionally. To correct my mistake from happening again, I have reread far 91.129A-I and aim 4-3-18(1-8). I will also make sure I ask ATC to verify their instructions before entering any runway area. It is my goal and intention to comply with all FARS and ATC instructions for safety reasons. I expect to continue to review the far/aim to be sure to stay in compliance.

Original NASA ASRS Text

Title: A LOW TIME TFC WATCH PLT TAXIED ACROSS RWY 3 WITHOUT PERMISSION AT SAT.

Narrative: I CONTACTED GND CTL (AT SAN ANTONIO) AND REQUESTED TO TAXI TO RWY 3 USING TXWY E. GND CTL REPLIED, 'TAXI RWY 3 VIA TXWY E' (OR WORDS TO THAT EFFECT). I RESPONDED, '...TAXI TO RWY 3 ON TXWY E.' AS I LOOKED TO MY L WHILE TAXIING ON TXWY E, I OBSERVED A LARGE ACFT ROLLING OUT ON RWY 12R. I THOUGHT IT MUST BE SOMETHING, THEN I LOOKED TO MY L AND SAW A LARGE ACFT HOLDING SHORT OF RWY 3. I CONTINUED FORWARD BELIEVING I WAS CLRED TO TAXI ACROSS RWY 3 TO THE RUN-UP AREA. BY THE TIME I REACHED THE RWY, I THOUGHT (FELT) SOMETHING WAS WRONG. I THOUGHT I DIDN'T ASK GND IF I WAS CLRED TO CROSS RWY 3. THIS IS WHEN GND CTL RADIOED AND TOLD ME I WASN'T CLRED TO TAXI ACROSS RWY 3 BUT TO TAXI ACROSS RWY 3 NOW TO TXWY N, THEN L TO RWY 3. THIS IS WHEN I REALIZED I HAD JUST VIOLATED, I BELIEVE, FAR 91.129I, ALBEIT UNINTENTIONALLY. TO CORRECT MY MISTAKE FROM HAPPENING AGAIN, I HAVE REREAD FAR 91.129A-I AND AIM 4-3-18(1-8). I WILL ALSO MAKE SURE I ASK ATC TO VERIFY THEIR INSTRUCTIONS BEFORE ENTERING ANY RWY AREA. IT IS MY GOAL AND INTENTION TO COMPLY WITH ALL FARS AND ATC INSTRUCTIONS FOR SAFETY REASONS. I EXPECT TO CONTINUE TO REVIEW THE FAR/AIM TO BE SURE TO STAY IN COMPLIANCE.

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.