A learjet fltcrew becomes distracted and inadvertently penetrated runway without clearance.

Attributes
ACN	576714
Time
Date	200303
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cno.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	general aviation : corporate
Make Model Name	Gates Learjet Corp Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 75 flight time total : 9600 flight time type : 1200
ASRS Report	576714
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Events
Anomaly	incursion : runway non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I received a taxi clearance from cno ground control to taxi to runway 26R which I acknowledged, but I had in mind to taxi to the longer runway 26L. During the taxi, I became distracted and thought that I was cleared to the longer runway and inadvertently entered runway 26R.

Original NASA ASRS Text

Title: A LEARJET FLTCREW BECOMES DISTRACTED AND INADVERTENTLY PENETRATED RWY WITHOUT CLRNC.

Narrative: I RECEIVED A TAXI CLRNC FROM CNO GND CTL TO TAXI TO RWY 26R WHICH I ACKNOWLEDGED, BUT I HAD IN MIND TO TAXI TO THE LONGER RWY 26L. DURING THE TAXI, I BECAME DISTRACTED AND THOUGHT THAT I WAS CLRED TO THE LONGER RWY AND INADVERTENTLY ENTERED RWY 26R.

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.