Light Transport; Low Wing; 2 Turbojet Eng
Flight Crew Air Transport Pilot (ATP)
Distraction; Situational Awareness; Confusion
No Specific Anomaly Occurred All Types
Flight Crew Requested ATC Assistance / Clarification; Flight Crew Became Reoriented
Chart Or Publication; Procedure; Airport
I was the PIC and flying pilot for our ferry flight from IWA. We started to taxi out while it was still dark. Our taxi instructions where E to B to G for runway 12R. I have made this taxi several times in the past from the Cessna service center. I expected to taxi straight across the large pad at the end of B and 12R area and hold short of 12R at G. The Jepp taxi diagram was just like [I] had remembered the area looking like. As we taxied on E we came to B taxi way and also saw the G taxiway signs. As I continued straight I saw a large triangle shaped new non-taxi area that is not depicted on taxi diagram to my right. I was just past the turn onto B. Instead of making a hard right 130 turn we asked and were granted permission to taxi via new unmarked unnamed taxi way from the holding pad to G. This taxiway was narrow but still wide enough for our aircraft. Everything else was normal. Update Jepp taxi chart. The chart revision date is 8/14/2015 and according to Google maps there has been construction in this area. I've attached the taxi diagram. I would also attach Jepp plate picture but only one attachment is allowed via asap web site.
The reporter stated that Taxiway G from the Service Center Ramp is NOTAM'ed Taxiway E permanently. The new no taxi area is across what would be a straight line extension of the new Taxiway E directly to the end of Runway 12R. As it currently exists; from Taxiway E an aircraft turns right onto B; avoiding the closure; then left onto G.
A pilot reported a new 'no taxi' area just beyond the new IWA Taxiway E and where it turns onto Taxiway B. IWA NOTAM 07/040 dated 1507282315 permanently changed the ramp Taxiway to E; but airport diagrams do not reflect changes.