Flight Crew Commercial; Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 80; Flight Crew Total 4500; Flight Crew Type 2500
Communication Breakdown
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Incursion Runway
Air Traffic Control Separated Traffic; Flight Crew Took Evasive Action
Human Factors; Procedure
On above time and date at SJC I taxied from FBO to 30L at intersection C for departure.  Upon completing the run up at about a 45 degree angle to runway facing departure end; I switched frequency to Tower frequency and immediately heard tower call me asking if I was ready.  I responded in the affirmative.  Tower's response was partially stepped on but I thought I was given take off clearance with an advisory of traffic on 2 1/2 mile final.  Since with Tower's initial call to me asking if I was ready I sensed possible urgency and in my attempt to assist in that perceived urgency I quickly ran through pre take off flow and turned aircraft perpendicular to runway which placed the aircraft partially over the hold short line.  Upon becoming perpendicular to runway I looked for the said traffic on final and saw the traffic not on 2 1/2 mile final but on short final.  I immediately stopped the aircraft at which time Tower urgently advised me to hold short.  I believe the tail of the aircraft was approximately at the hold short line with of course the rest of the aircraft beyond the hold short line.  The Tower did advise the landing traffic to go around.  After take off I was given a phone number to call.  Immediately upon landing I called said phone number as requested and discussed occurrence with Tower.
Pilot reported communications issues with ATC led to a runway incursion and the tower directing the other aircraft to go around.