A pilot departed lvk runway 25R onto taxiway C with clearance onto taxiway J and instead turned left...

Attributes
ACN	929549
Time
Date	201101
Local Time Of Day	0601-1200
Place
Locale Reference	LVK.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Small Aircraft High Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Person 1
Function	Captain
Qualification	Flight Crew Instrument Flight Crew Commercial
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 4000 Flight Crew Type 2500
Person 2
Function	Pilot Not Flying
Qualification	Flight Crew Instrument Flight Crew Commercial
Experience	Flight Crew Last 90 Days 4 Flight Crew Total 1672 Flight Crew Type 1537
Events
Anomaly	Deviation - Procedural Clearance Ground Incursion Taxiway

Narrative:

Landed on runway 25R and exited runway on taxiway charlie pulling clear of runway limit lines and stopped. My spinner was nearly protruding into taxiway. Ground cleared me to my destination 'via juliet golf.' looking ahead; across the taxiway in to the southeast corner I see the marker 'J' but nothing but ramp beyond. Looking to left at ground nearest my aircraft I see no markers. Believing I am at intersection of charlie and juliet and hearing confirmation from my copilot holding the airport diagram plate (communication/instruction). I turned left on the taxiway. Halfway to my northwest apron destination; ground advises me I was 'cleared on juliet.' I was on alpha. On departure I saw the alpha sign on the northwest corner of runway 25R and taxiway C. Perhaps painting the taxiway designation on the taxiway would prevent this - similar to 'stop' at road intersections. Also note this is not my home airport.

Original NASA ASRS Text

Title: A Pilot departed LVK Runway 25R onto Taxiway C with clearance onto Taxiway J and instead turned left on Taxiway A because his assistant read the chart incorrectly and he viewed the Taxiway J sign beyond Taxiway A.

Narrative: Landed on Runway 25R and exited Runway on Taxiway Charlie pulling clear of runway limit lines and stopped. My spinner was nearly protruding into Taxiway. Ground cleared me to my destination 'via Juliet Golf.' Looking ahead; across the Taxiway in to the southeast corner I see the marker 'J' but nothing but ramp beyond. Looking to left at ground nearest my aircraft I see no markers. Believing I am at intersection of Charlie and Juliet and hearing confirmation from my copilot holding the airport diagram plate (communication/instruction). I turned left on the taxiway. Halfway to my northwest apron destination; Ground advises me I was 'cleared on Juliet.' I was on Alpha. On departure I saw the Alpha sign on the northwest corner of Runway 25R and Taxiway C. Perhaps painting the taxiway designation on the taxiway would prevent this - similar to 'stop' at road intersections. Also note this is not my home airport.

Data retrieved from NASA's ASRS site as of April 2012 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.

A pilot departed lvk runway 25R onto taxiway C with clearance onto taxiway J and instead turned left on taxiway a because his assistant read the chart incorrectly and he viewed the taxiway J sign beyond taxiway a.