Narrative:

We were conducting a ground reposition from the hangar; to the terminal. We made three traffic advisories prior to crossing the two runways. No other traffic advisories were heard on the common traffic advisory frequency (CTAF). We were taxiing southbound on alpha and made another advisory that we were crossing runway xx and taxiing down runway yy to the terminal. No other traffic was observed other than a company aircraft that was following us out of the hangar. While approaching the hold short line; I looked left two times while the first officer cleared the right side of the aircraft. I proceeded to turn on our landing lights; anti-collision lights; and ice lights as we crossed the first hold short line for the runway. Approaching the hold bar for the second runway; I looked left again to clear traffic while the first officer cleared the right. At this point we had still not heard any radio communications other than the company aircraft that was following us. While in the middle of crossing runway xx; I saw an aircraft turn on their landing light while on the departure roll for runway xx. This aircraft was coming straight at us with what appeared to be no intention of stopping. At this point it was too late for us to stop as we were clearing the runway and that would have done more harm than good. I advanced the power to expedite the clearing process as the aircraft rotated right behind our tail. We continued to the terminal and still never heard any radio communications from that aircraft. There were no passengers on the aircraft and this event did not cause any physical damage to our aircraft or anyone of the 3 crew members on board.

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Original NASA ASRS Text

Title: During an early morning taxi from the hangar to the terminal; prior to the Tower being open; the pilots of a Saab 340 observed another aircraft takeoff as they were crossing the runway. They never heard any communication from the departing flight crew during taxi; takeoff; or climb.

Narrative: We were conducting a ground reposition from the hangar; to the terminal. We made three traffic advisories prior to crossing the two runways. No other traffic advisories were heard on the Common Traffic Advisory Frequency (CTAF). We were taxiing southbound on Alpha and made another advisory that we were crossing Runway XX and taxiing down Runway YY to the terminal. No other traffic was observed other than a company aircraft that was following us out of the hangar. While approaching the hold short line; I looked left two times while the First Officer cleared the right side of the aircraft. I proceeded to turn on our landing lights; anti-collision lights; and ice lights as we crossed the first hold short line for the runway. Approaching the hold bar for the second runway; I looked left again to clear traffic while the First Officer cleared the right. At this point we had still not heard any radio communications other than the company aircraft that was following us. While in the middle of crossing Runway XX; I saw an aircraft turn on their landing light while on the departure roll for Runway XX. This aircraft was coming straight at us with what appeared to be no intention of stopping. At this point it was too late for us to stop as we were clearing the runway and that would have done more harm than good. I advanced the power to expedite the clearing process as the aircraft rotated right behind our tail. We continued to the terminal and still never heard any radio communications from that aircraft. There were no passengers on the aircraft and this event did not cause any physical damage to our aircraft or anyone of the 3 crew members on board.

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.