Narrative:

A student pilot was flying a soft field takeoff. With the yoke pulled back and ailerons into the wind we applied power. We lifted off about 40 kts and even with crosswind correction we were pushed left very quickly. My student started to freak out. I was on the controls the entire time and called 'my controls.' he fought me for a moment and then gave me the controls. We stabilized the crosswind drift; but our main gear struck a taxiway exit sign which caused us to come to the ground and prop strike. We came to rest on the taxiway. No injuries from either pilot.

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Original NASA ASRS Text

Title: C172 instructor pilot reported a loss of control by a student pilot in crosswind conditions that resulted in a runway excursion and prop strike.

Narrative: A student pilot was flying a soft field takeoff. With the yoke pulled back and ailerons into the wind we applied power. We lifted off about 40 kts and even with crosswind correction we were pushed left very quickly. My student started to freak out. I was on the controls the entire time and called 'my controls.' He fought me for a moment and then gave me the controls. We stabilized the crosswind drift; but our main gear struck a taxiway exit sign which caused us to come to the ground and prop strike. We came to rest on the taxiway. No injuries from either pilot.

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.