What was found
UPON CLIMB-OUT AFTER TAKEOFF, PILOT REPORTED ROUGH RUNNING ENGINE AND A LOSS OF POWER. PILOT STARTED TURNING BACK FOR AIRPORT AND DECIDED NOT ENOUGH POWER AND LANDED SAFELY IN A FARMER''S FIELD. DISCOVERED, NR 7 CYLINDER HEAD CRACKED FROM ONE SPARK PLUG HOLE ALL THE WAY TO THE OTHER. MAINTENANCE SUGGESTED ALONG WITH A VISUAL INSPECTION OF CYLINDER AND WHILE DOING A COMPRESSION CHECK, ALSO DO A SOAP AND WATER CHECK FOR CRACKS WHEN AIR IS PUT TO THE CYLINDER. (X)