Date: 201504
Local time of day: 0001-0600
Location: DTW.Airport, MI
Flight conditions: VMC
Weather elements / visibility: 10
Light: Night
Aircraft: Light Transport
Operator: Air Taxi
Operating under: Part 135
Flight plan: IFR
Mission: Passenger
Flight phase: Taxi
ATC / advisory: Ground DTW
Reporter organization: Air Taxi
Reporter function: Pilot Not Flying; Captain
Reporter qualification: Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Second reporter function: Pilot Flying; First Officer
Anomaly: Deviation / Discrepancy - Procedural Clearance; Ground Incursion Taxiway; Ground Incursion Runway
Detector: Person Air Traffic Control
When detected: Taxi
Result: Air Traffic Control Issued New Clearance; Air Traffic Control Issued Advisory / Alert; Flight Crew Returned To Clearance; Flight Crew Became Reoriented
Contributing factors: Airport; Human Factors; Chart Or Publication
Primary problem: Human Factors

Narrative: Prior to arrival; my company dispatch simply instructed me that my ground destination was ABCD/FBO North.  Within the past 12 months; I had been there before; and my airport diagram dated 02 April 2015 thru 30 April 2015 confirmed my recollection of location.  However; after clearing runway 3 Right (the landing runway) onto W4; Metro Ground asked us where we wanted to go; because; there were two locations to choose from.  Relying upon my airport diagram; and the instructions from dispatch; I stated that we needed to go to ABCD/FBO North; after which Metro Ground gave us instructions that seemed to confirm my anticipated routing - - taxiing on W; P4; P; cross 27Right.  This we did; and upon arrival; we found that the location was seemingly unmanned.  So I instructed the copilot to stop the plane until I got clarification from the ground controller.  After querying Metro Ground; we were told that the location where we were was no longer being used; and that there were two locations to choose; one on the south side; and the other referred to as to the north location; but on the west side of runway 21 Right.  That is when I became dumbfounded because it was contrary to what I was viewing and relying upon with my CURRENT airport diagram.  I informed the ground controller as to what I was actually looking at with respect to my airport diagram; and he informed me that is was outdated.  I then told him that I needed to stop the plane and call my dispatch.  So on taxiway P; we stopped; and I called dispatch; and asked that he be specific as to where the FBO that I needed to be at was located on the field.  What I was then told matched what I was being told by the ground controller; despite what I was looking at on my seemingly out dated airport diagram.  So I thanked dispatch and told the ground controller that we needed to be at the FBO on the west side of 21 Right.  He then gave; and I wrote down; the following taxi instructions: P; P4; W; V; M; cross 21 Right  As the First Officer (FO) taxied the aircraft; I gave him status as to his location; and the to be expected turns.  However; as we approached hot spot 4; the taxi instructions that we were given did not seem to match with what I was looking at on an 'Out Dated;' but current airport diagram; in particular it did not look like W was necessary; but a hard right turn onto V; so I asked the ground controller if he was sure that we needed to turn onto W; and he replied; right on W; right on V; and cross 21 Right.  As we came upon the intersection of hot spot 4; the lighted signage was sorely placed; and very lacking.  I saw that the FO was making a right turn as I looked down to try to understand how we were supposed to turn right onto taxiway W; and again onto taxiway V.  It was then that we came to a hold short line for a runway.  I knew that ATC had given us instructions to cross a runway; and when the FO mentioned that we were coming upon a runway; I said yes continue; at which point I became momentarily disoriented; until the ground controller said to continue down 27 Right; cross 21 Right; and turn right on M.  At that point; I reacquired my position awareness; and no further discussion was spoken by the crew; or Metro Ground concerning the unauthorized runway access...as we made our way to the mysterious FBO utilizing an 'outdated;' but current airport diagram.


Second narrative: [Report narrative contained no additional information.]


Synopsis: After landing on Runway 03R at DTW; Air Taxi Flight Crew requests taxi to the FBO North which turns out to be no longer in use. After a call to Dispatch taxi instructions are received to the FBO west of Runway 21R; via P; P4; W; V; M; cross 21 Right. The crew becomes confused at P4 and W and continues on W and enters Runway 27R.