Narrative:

I was on a training flight with a student conducted under part 91 as a stage check flight associated with commercial pilot flight training. After visually clearing the runway environment and traffic pattern; the student made a call on CTAF advising that we were taking off runway xx; and we began our roll onto the runway. Seconds prior to our aircraft being in position; aircraft Y (C150) called that he was crossing runway xx at [another] taxiway; which crosses runway xx at approximately mid-way down the runway. Aircraft Y pilot said he was expediting; or no delay (I don't specifically recall which); and crossed the runway in front of us. After aircraft Y crossed the runway and was clear; we began our takeoff roll. We delayed our takeoff roll after pulling onto the runway after aircraft Y said he was crossing; even though we had already communicated our intentions on CTAF; and visually cleared the runway prior to entering the runway environment. Prior to crossing runway xx; aircraft Y landed runway yy; and I believe was taxiing to his hangar on the west side of the airport. I believe we made the right decision to not begin our takeoff roll; given that aircraft Y crossed the runway; even though we had communicated our intentions and done our due diligence before even taking position on the runway. CTAF was busy; and there were multiple aircraft in the area; and at least one aircraft operating in the traffic pattern. Aircraft Y's pilot infrequently follows or adheres to aim recommendations for operating at an uncontrolled airfield. I believe we could've performed better by ensuring more thorough visual scanning of the runway environment; and communicated with aircraft Y to determine his intentions prior to our takeoff.

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Original NASA ASRS Text

Title: C172 flight instructor reported a delayed takeoff after another pilot announced crossing the runway down field.

Narrative: I was on a training flight with a student conducted under part 91 as a stage check flight associated with commercial pilot flight training. After visually clearing the runway environment and traffic pattern; the student made a call on CTAF advising that we were taking off Runway XX; and we began our roll onto the runway. Seconds prior to our aircraft being in position; Aircraft Y (C150) called that he was crossing RWY XX at [another] taxiway; which crosses Runway XX at approximately mid-way down the runway. Aircraft Y pilot said he was expediting; or no delay (I don't specifically recall which); and crossed the runway in front of us. After Aircraft Y crossed the runway and was clear; we began our takeoff roll. We delayed our takeoff roll after pulling onto the runway after Aircraft Y said he was crossing; even though we had already communicated our intentions on CTAF; and visually cleared the runway prior to entering the runway environment. Prior to crossing Runway XX; Aircraft Y landed Runway YY; and I believe was taxiing to his hangar on the west side of the airport. I believe we made the right decision to not begin our takeoff roll; given that Aircraft Y crossed the runway; even though we had communicated our intentions and done our due diligence before even taking position on the runway. CTAF was busy; and there were multiple aircraft in the area; and at least one aircraft operating in the traffic pattern. Aircraft Y's pilot infrequently follows or adheres to AIM recommendations for operating at an uncontrolled airfield. I believe we could've performed better by ensuring more thorough visual scanning of the runway environment; and communicated with Aircraft Y to determine his intentions prior to our takeoff.

Data retrieved from NASA's ASRS site 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.