Narrative:

Landing phase of flight at end of a training flight. Student in left seat; CFI in right seat. No issues with any phase of flight until roll out after landing. Plane veered to right during roll out after engaging brakes to slow down. Plane exited runway xxr to the right side of the runway prior to the intersection with runway xy/xz. Was able to exit between lights; cross a grass area between runways and get onto runway xy/xz. Was able to regain control and exited all runways onto taxiway a. Stopped and contacted ground requesting taxi to FBO. Tested brakes and steering during taxi and had no further issues. Unsure if the issue was related to brakes or excitable student. No runway lights were hit nor any damage to aircraft.learned that after years of instructing that either a student or an aircraft can still surprise a CFI. Will be much more aware of this particular student's actions in the future and much more prepared for his potential engagement with the controls. Human factors involved included complacency with student after years of no student issues.

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Original NASA ASRS Text

Title: Cessna 172 instructor pilot reported a runway excursion during landing roll-out.

Narrative: Landing phase of flight at end of a training flight. Student in left seat; CFI in right seat. No issues with any phase of flight until roll out after landing. Plane veered to right during roll out after engaging brakes to slow down. Plane exited Runway XXR to the right side of the runway prior to the intersection with Runway XY/XZ. Was able to exit between lights; cross a grass area between runways and get onto Runway XY/XZ. Was able to regain control and exited all runways onto Taxiway A. Stopped and contacted Ground requesting taxi to FBO. Tested brakes and steering during taxi and had no further issues. Unsure if the issue was related to brakes or excitable student. No runway lights were hit nor any damage to aircraft.Learned that after years of instructing that either a student or an aircraft can still surprise a CFI. Will be much more aware of this particular student's actions in the future and much more prepared for his potential engagement with the controls. Human factors involved included complacency with student after years of no student issues.

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.