Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 351; Flight Crew Type 7000
Communication Breakdown; Confusion; Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy; Ground Incursion Runway
General None Reported / Taken
Airport; Chart Or Publication
Taxi instructions were C; N; E; to Runway 28C. Once on E I called for the Before Takeoff Checklist. While running the checklists; we saw there was a hold line; an awfully long way from the turn onto 28C. Thinking it must be an ILS hold line; we crossed the line and then stopped abruptly; since I did not see any other hold line. Aircraft cockpit was maybe 25 to 50 feet past the line and prior to the turn onto 28C. ATC didn't say anything. We were then cleared for takeoff; and then looked over to see where the hold line was on Taxiway E in relation to the departure end of 28C. After airborne; we discussed the incident and decided that a report was warranted. Perhaps a diagram showing where the hold line is on the taxiway would eliminate any confusion.
Air carrier Captain reported the location of the hold short line for a Runway 28C at PIT airport is difficult to determine.