Cardinal 177/177RG
Flight Crew Private
Flight Crew Last 90 Days 15; Flight Crew Total 1100; Flight Crew Type 750
Communication Breakdown; Confusion; Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural Clearance; Ground Event / Encounter Other / Unknown; Ground Incursion Runway
Air Traffic Control Issued New Clearance; Flight Crew Requested ATC Assistance / Clarification
Procedure; Human Factors; Airport
I picked up the plane at the maintenance area; rather than the usual ramp. Ground directed taxi to Runway 09; via Alpha...probably specified 'via A3;' but I may have heard/assumed [Taxiway] B3. I inadvertently crossed hold line for [Runway] 9/27; I believe it was on [Taxiway] B.I believe I must have misread the multiple sign group which was visible from the start of [Taxiway] B3 as meaning straight on [Taxiway] B3 and then right to reach [Runway] 9. Correct path would have been across the ramp and thence [Taxiway] A3.I should have reviewed diagram more carefully before starting taxi; even though this is a relatively simple airport--must do this in future. Also; I will re-review airport signage and markings and look for an appropriate ground training course in this area. Also; I will STOP and ASK if I've any doubt whatsoever about correct route.I don't know how common confusion is around the intersections of B3 and A and runways 9-27 and 2-20; but it might be a good idea to review sign placement and/or identify as a hotspot.
A C-177RG pilot misinterpreted his taxi clearance to Runway 09 at AHN and; instead; crossed the hold short line at the approach end of Runway 27.