As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YOKE MOUNT CLAMP INSTALLED BY OWNER GOT FOULED IN THE POWER WIRE TO PORTABLE GPS. RESTRICTED YOKE MOVEMENT. PILOT MAKE HARD LANDING. WIRE FINALLY BROKE IN TWO ALLOWING A/C TO BE 'FLARED'. PILOTS SHOULD BE MADE AWARE TO CHECK YOKE MOVEMENT ON PRE-FLIGHT. YOKE MODIFIED WITH CURLEY CORD TO PREVENT RECURRENCE.