Narrative:

On takeoff aircraft had shown yaw to left 90 degrees contacted ground; left the runway and hit a tower pole laying on the ground. Propeller hit pole and cowling was damaged by the pole. Still have not determined cause of why aircraft left at 90 degrees from runway. Probably would not have sustained damage if contractor had not had pole laying where it was.

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Original NASA ASRS Text

Title: C170 SUSTAINS DAMAGE AFTER YAWING L ON TKOF.

Narrative: ON TKOF ACFT HAD SHOWN YAW TO L 90 DEGS CONTACTED GND; LEFT THE RWY AND HIT A TWR POLE LAYING ON THE GND. PROP HIT POLE AND COWLING WAS DAMAGED BY THE POLE. STILL HAVE NOT DETERMINED CAUSE OF WHY ACFT LEFT AT 90 DEGS FROM RWY. PROBABLY WOULD NOT HAVE SUSTAINED DAMAGE IF CONTRACTOR HAD NOT HAD POLE LAYING WHERE IT WAS.

Data retrieved from NASA's ASRS site as of January 2009 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.