What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) The pilot and his family were enroute to springfield, MO for christmas. He received a weather briefing in bloomington, IL, but according to fss personnel did not received the VFR not recommended statement. The pilot explained that he started losing power and began to pick up ice at 4000' MSL and requested a climb to 5000' MSL. Upon reaching 5000' he was still losing power and told ATC that he wanted vectors for the closest airport with an ILS. While being vectored to scott afb/midamerica airport, kblv, he was unable to maintain enough power for flight and landed in a corn field about 3 miles from the airport. An examination of the aircraft shortly after landing showed the carburetor air inlet was packed with snow and after cleaning it out, the air filter was covered with an ice dam that varied from about 2 1/2 inches wide at the base to 1/2 inch thick at the top and appeared to go at least halfway around the filter. There was mixed icing on leading edges of both wings, numerous icicles formed in a rearward streaming direction in several places, and a significant amount of snow in the engine inlets with numerous icicles hanging from the inside of the cowling.
As the FAA filed it
(-23) THE PILOT AND HIS FAMILY WERE ENROUTE TO SPRINGFIELD, MO FOR CHRISTMAS. HE RECEIVED A WEATHER BRIEFING IN BLOOMINGTON, IL, BUT ACCORDING TO FSS PERSONNEL DID NOT RECEIVED THE VFR NOT RECOMMENDED STATEMENT. THE PILOT EXPLAINED THAT HE STARTED LOSING POWER AND BEGAN TO PICK UP ICE AT 4000' MSL AND REQUESTED A CLIMB TO 5000' MSL. UPON REACHING 5000' HE WAS STILL LOSING POWER AND TOLD ATC THAT HE WANTED VECTORS FOR THE CLOSEST AIRPORT WITH AN ILS. WHILE BEING VECTORED TO SCOTT AFB/MIDAMERICA AIRPORT, KBLV, HE WAS UNABLE TO MAINTAIN ENOUGH POWER FOR FLIGHT AND LANDED IN A CORN FIELD ABOUT 3 MILES FROM THE AIRPORT. AN EXAMINATION OF THE AIRCRAFT SHORTLY AFTER LANDING SHOWED THE CARBURETOR AIR INLET WAS PACKED WITH SNOW AND AFTER CLEANING IT OUT, THE AIR FILTER WAS COVERED WITH AN ICE DAM THAT VARIED FROM ABOUT 2 1/2 INCHES WIDE AT THE BASE TO 1/2 INCH THICK AT THE TOP AND APPEARED TO GO AT LEAST HALFWAY AROUND THE FILTER. THERE WAS MIXED ICING ON LEADING EDGES OF BOTH WINGS, NUMEROUS ICICLES FORMED IN A REARWARD STREAMING DIRECTION IN SEVERAL PLACES, AND A SIGNIFICANT AMOUNT OF SNOW IN THE ENGINE INLETS WITH NUMEROUS ICICLES HANGING FROM THE INSIDE OF THE COWLING.