Light Transport; Low Wing; 2 Turbojet Eng
Flight Crew Instrument; Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Last 90 Days 104; Flight Crew Total 4410; Flight Crew Type 797
Confusion; Situational Awareness
Deviation / Discrepancy - Procedural Clearance; Ground Incursion Taxiway
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance; Flight Crew Became Reoriented
Airport; Human Factors
We were flying two passengers into Fort Worth Meacham (FTW). We were told to take the passengers to [a] Hangar; on the southwest side of the field. I called both our broker and the  Hangar phone numbers to get confirmation on where we were supposed to go. We were told to take taxiway Sierra to the hangar and were even given a UNICOM frequency to talk to line service at the hangar.When we were handed over to tower on a visual approach to runway 16; we advised the tower that we would like to exit the runway to the right onto taxiway Sierra to the Hangar. The tower controller told us that was fine and cleared us to land. As we were rolling out; both of us were looking to our right for taxiway Sierra. We turned right at the very end of the runway onto taxiway Whiskey. The tower advised us that we had turned onto the wrong taxiway; that we were in a non-movement area and we could turn around at our own risk. We turned around; taxied back to the runway hold short lines for 16/34 on Whiskey and held short of the runway. Eventually the tower had a gap in traffic and let us back-taxi on runway 16 to get to taxiway Sierra and over to the Hangar. The passengers were understanding and disembarked.When we contacted ground and tower later to taxi over to another FBO on the field; the ground controller told us to contact tower and that the tower controller wanted to talk to us. We contacted the tower and crossed runway 16/34 on our way to the FBO. The tower controller advised us that we 'weren't in any trouble' and that he had complained about the lack of signage for taxiway Sierra for some time to the airport management. He said that he had other aircraft have issues with it in the past; and that he personally didn't think we were at fault.Contributing factors:1) We had never been to the Hangar before; and from looking at the taxi diagram taxiway Sierra seems like a simple place to get to.2) There is no signage of any kind that indicates taxiway Sierra from the perspective of an aircraft exiting runway 16/34 onto taxiway Sierra. There is an 'S' sign on the taxiway coming from the opposite direction (from the Hangar towards the runway).3) Rubber markings and runway markings - taxiway Sierra is on the first third of runway 34; and taxiway lead-off line onto Sierra was mostly obscured with rubber from arrivals. The thousand foot markers on the approach end of runway 34 also reduced the amount of lead-off line that was visible.4) Airport elevation - runway 16/34 is higher than taxiway Sierra; meaning it's tough to see the taxiway from the airplane (at least in a Light Transport) since it's sloping downhill and away. Taller airplanes could see it easier.Both the first officer and myself felt that we had done the proper amount of homework (calling the hangar and talking to their personnel; calling our broker for advice; briefing the taxi diagram before arrival; advising tower of our intentions before even landing; etc) to get to the hangar safely. 'Best laid plans' and all that.As of this writing there is no NOTAM for this lack of taxiway signage at FTW; and I don't recall seeing one on the day of the flight.Easiest fix: reinstall proper signage for taxiway Sierra on the runway side.In the future; if we have to take passengers to this area of FTW again; we will be much; much more vigilant and aware of this taxiway situation; and will assume it still hasn't been fixed until we see otherwise for ourselves.
Light Transport aircraft Captain reported landing on Runway 16 at FTW and planning a turn off at Taxiway S which was never noticed and a turn at Taxiway W was the last option. The Tower advised that Taxiway S was missed and that signage may be lacking. The crew agreed that signage was lacking and the taxiway itself was hard to see.