Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP)
Fatigue; Situational Awareness; Workload
Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Other / Unknown; Ground Incursion Taxiway
Flight Crew Became Reoriented
Airport; Chart Or Publication; Human Factors
After landing Runway 30 at EAT; we cleared the runway via a right turn at A4. Then we made a left turn on taxiway A toward the terminal. We found ourselves at a 'dead end' with no way to continue to the terminal ramp from our position. Realizing there was limited space to turn around; we called out wing walkers from the station and they marshaled us while we turned around and exited the 'dead end.'The primary cause of this event is airport facility issues at EAT; specifically; the construction currently ongoing at EAT and how it is depicted on the Airport Info chart (plate 10-9). When viewing the chart; it depicts a width of Taxiway A alongside the construction (XXXXX's) that still provides access to the terminal ramp. This is NOT the case. Further; the chart depicts A as the same scale of width that is depicted by Taxiway A that runs the entire parallel from A5 to A1. This same scale of width is currently open from Taxiway A from A4 to A1.Further; Dispatch to Pilot communication also was a cause in this event. While Dispatch is trying to be helpful in including a note on the release; (it reads):'Be advised - NOTAM 02/042: Taxiway Closure between A4 and Terminal Apron requires back taxi on Runway when landing Runway 12.'I was landing Runway 30. Therefore; it caused me to disregard the NOTAM. My recommendation is to change the helpful note to read:'Taxiway A5 provides the only access to the Terminal (ref NOTAM 02/042).'Human Factors including....High workload (tail swap; short flight; brief RNP 30; reports of severe icing on approach and moderate turbulence enroute and approach)Fatigue (I generally fly morning trips and this was a night trip; last leg of 5; tail swap)Perceptual illusion (with taxiway A4 open and lit; is inviting to exit there rather than roll to A5; and the reflectors and flags along the construction invite a taxi towards the terminal and into the 'dead end'; as well as the depiction of the construction on the chart)...led to an insufficient attention to detail in the case of the pilot team reviewing the NOTAMs critically.
A Captain reported inadvertently entering a dead-end taxiway; commenting that the taxiway charting could be improved at EAT airport.