Taxi across active runway no clearance.

Attributes
ACN	267401
Time
Date	199404
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : las
State Reference	NV
Altitude	msl bound lower : 2175 msl bound upper : 2175
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	ground other : taxi
Flight Plan	VFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 200 flight time total : 2400 flight time type : 500
ASRS Report	267401
Person 2
Affiliation	government : faa
Function	controller : ground
Qualification	controller : non radar
Events
Anomaly	incursion : runway non adherence : clearance
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:

At las vegas mccarran airport the normally used runway for air taxi operators, 90 percent of the time, is 19L. On the day of the occurrence, I called for taxi, ground ctrl was very busy, and asked, 'who called for taxi?' I again called for taxi clearance and was certain ground cleared me to 19L. I was also certain I read back cleared to 19L. Taxiing to 19L requires crossing 19R and 1L. As I taxied out, I checked both directions before crossing 19R and 1L. It appeared clear. I taxied across and then noticed an aircraft had just touched down on 1L abut 4000 ft down on the runway. I then asked ground to verify 19L or 1L. They said, 'affirmative 1L.' I then taxied to 1L via the parallel taxiway. I then realized I was the active runway. When I reached the hold short line for 1L, I contacted tower for takeoff clearance, they informed me to contact them when I arrived to my destination. When I arrived at my destination, I called las tower, they informed me that I had crossed an active runway without clearance. I feel contributing factors to this occurrence were congestion on ground ctrl and the heavy workload on ground ctrl which limits ability to monitor ground movements.

Original NASA ASRS Text

Title: TAXI ACROSS ACTIVE RWY NO CLRNC.

Narrative: AT LAS VEGAS MCCARRAN ARPT THE NORMALLY USED RWY FOR AIR TAXI OPERATORS, 90 PERCENT OF THE TIME, IS 19L. ON THE DAY OF THE OCCURRENCE, I CALLED FOR TAXI, GND CTRL WAS VERY BUSY, AND ASKED, 'WHO CALLED FOR TAXI?' I AGAIN CALLED FOR TAXI CLRNC AND WAS CERTAIN GND CLRED ME TO 19L. I WAS ALSO CERTAIN I READ BACK CLRED TO 19L. TAXIING TO 19L REQUIRES XING 19R AND 1L. AS I TAXIED OUT, I CHKED BOTH DIRECTIONS BEFORE XING 19R AND 1L. IT APPEARED CLR. I TAXIED ACROSS AND THEN NOTICED AN ACFT HAD JUST TOUCHED DOWN ON 1L ABUT 4000 FT DOWN ON THE RWY. I THEN ASKED GND TO VERIFY 19L OR 1L. THEY SAID, 'AFFIRMATIVE 1L.' I THEN TAXIED TO 1L VIA THE PARALLEL TXWY. I THEN REALIZED I WAS THE ACTIVE RWY. WHEN I REACHED THE HOLD SHORT LINE FOR 1L, I CONTACTED TWR FOR TKOF CLRNC, THEY INFORMED ME TO CONTACT THEM WHEN I ARRIVED TO MY DEST. WHEN I ARRIVED AT MY DEST, I CALLED LAS TWR, THEY INFORMED ME THAT I HAD CROSSED AN ACTIVE RWY WITHOUT CLRNC. I FEEL CONTRIBUTING FACTORS TO THIS OCCURRENCE WERE CONGESTION ON GND CTRL AND THE HVY WORKLOAD ON GND CTRL WHICH LIMITS ABILITY TO MONITOR GND MOVEMENTS.

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.