Small aircraft crossed an active runway contrary to clearance to hold short.

Attributes
ACN	148027
Time
Date	199006
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sna
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	ground other : taxi
Flight Plan	None
Aircraft 2
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : takeoff climbout : initial
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 45 flight time total : 7000 flight time type : 2000
ASRS Report	148027
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : ground less severe incursion : runway
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I wanted to cross from the west side to the east side of airport. Obtained ground control clearance to hold short of runway 19R at delta taxiway. I did so, and later heard a transmission by ground control to cross west/O delay (expedite) nxy---. My regulation no is n---xya. After the xy the frequency became slightly garbled and I assumed that the tower was referring to me. As it turns out, they were talking to another plane with a similar regulation no at a different location on the field (small aircraft xy---). As I reached the midpoint first officer the runway, I observed an small transport departing down field. Having already committed to the runway, I continued across as fast at possible. From the south end of the field it is impossible to see a plane departing from the north end until it is airborne due to the slope of the runway. The problem was simply a communication failure due to frequency congestion at a very busy airport.

Original NASA ASRS Text

Title: SMA CROSSED AN ACTIVE RWY CONTRARY TO CLRNC TO HOLD SHORT.

Narrative: I WANTED TO CROSS FROM THE W SIDE TO THE E SIDE OF ARPT. OBTAINED GND CTL CLRNC TO HOLD SHORT OF RWY 19R AT DELTA TXWY. I DID SO, AND LATER HEARD A XMISSION BY GND CTL TO CROSS W/O DELAY (EXPEDITE) NXY---. MY REG NO IS N---XYA. AFTER THE XY THE FREQ BECAME SLIGHTLY GARBLED AND I ASSUMED THAT THE TWR WAS REFERRING TO ME. AS IT TURNS OUT, THEY WERE TALKING TO ANOTHER PLANE WITH A SIMILAR REG NO AT A DIFFERENT LOCATION ON THE FIELD (SMA XY---). AS I REACHED THE MIDPOINT FO THE RWY, I OBSERVED AN SMT DEPARTING DOWN FIELD. HAVING ALREADY COMMITTED TO THE RWY, I CONTINUED ACROSS AS FAST AT POSSIBLE. FROM THE S END OF THE FIELD IT IS IMPOSSIBLE TO SEE A PLANE DEPARTING FROM THE N END UNTIL IT IS AIRBORNE DUE TO THE SLOPE OF THE RWY. THE PROB WAS SIMPLY A COM FAILURE DUE TO FREQ CONGESTION AT A VERY BUSY ARPT.

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.