Narrative:

Cleared to taxi from parking ramp to [runway] xx via echo and delta; cross runway xy. I began the short taxi out echo to delta. The turn onto delta is about 45 degrees to the left and that taxiway intersection is about equal distance from xy; which is to the left on delta and which I was cleared to cross; and xx which was straight ahead on echo. I had my ipad in my lap with the taxi diagram displayed. I believe that as I entered the taxiway intersection; the runway warning activated on the ipad causing me to look down at the ipad taxi diagram right about when I should have been turning. I looked back up and realized I had gone through the intersection and; I believe; across the runway hold line for xx but short of the actual runway. I stopped immediately and ground control cleared me to continue to taxi onto xx; make an immediate turn to the left onto xy; and then right on delta to continue to xx. There was no loss of separation or conflict with other traffic. I should not have looked down at my ipad taxi diagram at that time; but the safety warning of runway proximity with two runways in the immediate vicinity was distracting. While I should have concentrated on the taxiing; it also does not seem right to not look at electronic safety guidance when it is issuing a warning. It was further complicated by the fact that I knew I was in the immediate vicinity of a runway that I was cleared to cross.

Google
 

Original NASA ASRS Text

Title: A BE-35 pilot was distracted to view his iPad's runway warning alert and so as he looked away from his external environment crossed a runway hold short instead of turning onto the taxiway in his clearance.

Narrative: Cleared to taxi from parking ramp to [Runway] XX via Echo and Delta; cross Runway XY. I began the short taxi out Echo to Delta. The turn onto Delta is about 45 degrees to the left and that taxiway intersection is about equal distance from XY; which is to the left on Delta and which I was cleared to cross; and XX which was straight ahead on Echo. I had my iPad in my lap with the taxi diagram displayed. I believe that as I entered the taxiway intersection; the runway warning activated on the iPad causing me to look down at the iPad taxi diagram right about when I should have been turning. I looked back up and realized I had gone through the intersection and; I believe; across the runway hold line for XX but short of the actual runway. I stopped immediately and Ground Control cleared me to continue to taxi onto XX; make an immediate turn to the left onto XY; and then right on Delta to continue to XX. There was no loss of separation or conflict with other traffic. I should not have looked down at my iPad taxi diagram at that time; but the safety warning of runway proximity with two runways in the immediate vicinity was distracting. While I should have concentrated on the taxiing; it also does not seem right to not look at electronic safety guidance when it is issuing a warning. It was further complicated by the fact that I knew I was in the immediate vicinity of a runway that I was cleared to cross.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.