As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT LOST POWER WHILE TAKING OFF WITH GLIDER IN TOW. GLIDER WAS RELEASED AND WAS DAMAGED DURING LANDING IN PASTURE. AIRCRAFT RETURNED TO AIRPORT AND LANDED. TWO SPARK PLUGS ON NR 2 CYLINDER WERE COLD. ALL EIGHT SPARK PLUGS WERE REPLACED.