Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP)
Confusion; Human-Machine Interface
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Chart Or Publication; Human Factors
On taxi out from BWI we were instructed to use taxiway E and Tango.  We saw a sign in the distance and as we approached it was the intersection of E and T.  The Jepps 10-9 page does not show taxiway Tango anywhere.  It is very uncomfortable to taxi without a correct 10-9 page for verification.  There is nothing in the Notams or the company information pages to tell the crew that there is no Taxiway Tango on the 10-9 page. Both FO and I were using current updated Jepps on our IPAD. JEPPS 10-9 page needs to be revised and/or aircrew needs to be notified by Notam/company messages that there is an omission on 10-9 page.
Air carrier Captain alleges that the Airport Diagram as displayed on an iPad does not show Taxiway Tango.