PA-46 Malibu/Malibu Mirage/Malibu Matrix
Flight Crew Commercial; Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Private
Flight Crew Last 90 Days 45; Flight Crew Total 4750; Flight Crew Type 1425
Confusion
Deviation / Discrepancy - Procedural Clearance; Ground Incursion Taxiway
Air Traffic Control Issued New Clearance; Flight Crew Became Reoriented
Airport; Chart Or Publication; Human Factors
After receiving and acknowledging ground clearance 'taxi to Runway 30L via Taxiway T; W; and hold short of Taxiway [V];' I taxied onto Taxiway T which sweeps left transitioning into Taxiway W. While taxiing; I looked for Taxiway W identifying signage but saw none. After completing the sweeping turn; ground instructed me to hold my position as I was now nose to nose (approximately 1;000 FT) with an Air Carrier. Fortunately the Air Carrier had stopped before Taxiway V so that ground could clear me to Runway 30L via Taxiway V. Due to an air show the following day; ground was parking GA aircraft on this remote ramp (southwest end of T) away from the FBO's ramp. This remote ramp serves local commercial traffic familiar with the local routing. I did have a current taxiway diagram and did see Taxiway T sweep into Taxiway W. However; without standard taxiway signage in this remote control area alerting a transient pilot of this taxiway transition an inadvertent incursion becomes much more likely.
PA46 pilot reports being unable to identify Taxiway V while on Taxiway W at IWA due to a lack of signage. A conflict with an opposing MD80 occurs which is resolved by Ground Control.