Narrative:

Local controller at sna tower was working both positions, the left (19L) and right (19R) runways. Local cleared me to cross the left and hold short of the right. I acknowledged and proceeded. Just short of the hold bars for the right. I was given additional instructions which I perceived, given my physical location, was to continue across the right runway. Due to IFR sequence requirements not an abnormal requirement. Upon self-clearing the approach end of the right runway (19R) separation with arrival traffic was grossly inadequate and I questioned the controller and brought my aircraft to a stop. I had passed the hold bars just past mid-airplane. The arrival MD80 went around. I believe the controller lost situational awareness as to my actual localizer in crossing the left for the right. The controller was working two position at a time of VMC/IMC operations. With a mix of high performance and low performance operations. The time of day has a high traffic request for arrival and department commercial operations. The positions should have been split. I have requested ATC tapes, and have spoken to sna quality assurance. A pilot deviation has been filed and I will be contacted by local FSDO. The second set of ATC instructions, given my position just short, and approach my hold, confused the situation at critical time. The controller did not know my actual localizer and I believe it was due to unnecessary excessive workload at that time.

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Original NASA ASRS Text

Title: A CORPORATE B85 PLT EXPERIENCE A RWY INCURSION AND A GND CONFLICT WITH LNDG TFC WHEN BELIEVING HE HAD CLRNC TO CROSS RWY 19R AT SNA, CA.

Narrative: LCL CTLR AT SNA TWR WAS WORKING BOTH POSITIONS, THE L (19L) AND R (19R) RWYS. LCL CLRED ME TO CROSS THE L AND HOLD SHORT OF THE R. I ACKNOWLEDGED AND PROCEEDED. JUST SHORT OF THE HOLD BARS FOR THE R. I WAS GIVEN ADDITIONAL INSTRUCTIONS WHICH I PERCEIVED, GIVEN MY PHYSICAL LOCATION, WAS TO CONTINUE ACROSS THE R RWY. DUE TO IFR SEQUENCE REQUIREMENTS NOT AN ABNORMAL REQUIREMENT. UPON SELF-CLRING THE APCH END OF THE R RWY (19R) SEPARATION WITH ARR TFC WAS GROSSLY INADEQUATE AND I QUESTIONED THE CTLR AND BROUGHT MY ACFT TO A STOP. I HAD PASSED THE HOLD BARS JUST PAST MID-AIRPLANE. THE ARR MD80 WENT AROUND. I BELIEVE THE CTLR LOST SITUATIONAL AWARENESS AS TO MY ACTUAL LOC IN XING THE L FOR THE R. THE CTLR WAS WORKING TWO POS AT A TIME OF VMC/IMC OPS. WITH A MIX OF HIGH PERFORMANCE AND LOW PERFORMANCE OPS. THE TIME OF DAY HAS A HIGH TFC REQUEST FOR ARR AND DEPT COMMERCIAL OPS. THE POSITIONS SHOULD HAVE BEEN SPLIT. I HAVE REQUESTED ATC TAPES, AND HAVE SPOKEN TO SNA QUALITY ASSURANCE. A PLT DEV HAS BEEN FILED AND I WILL BE CONTACTED BY LCL FSDO. THE SECOND SET OF ATC INSTRUCTIONS, GIVEN MY POS JUST SHORT, AND APCH MY HOLD, CONFUSED THE SIT AT CRITICAL TIME. THE CTLR DID NOT KNOW MY ACTUAL LOC AND I BELIEVE IT WAS DUE TO UNNECESSARY EXCESSIVE WORKLOAD AT THAT TIME.

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.