What was found
ON APPROACH CARBURETOR HEAT WAS APPLIED AND THE ENGINE IMMEDIATELY LOST POWER BUT DID NOT STOP RUNNING. THE PILOT ATTEMPTED TO DE-SELECT THE CARBURETOR HEAT AND THE LOSS OF POWER PERSISTED. THE AIRCRAFT WAS ABOUT 2300 FEET MSL AND 2 NM FROM THE RUNWAY. THE AIRCRAFT WAS ABLE TO GLIDE TO THE RUNWAY AND MAKE A SAFE LANDING. POST LANDING THE ENGINE STILL WOULD NOT MAKE POWER. INSPECTION OF THE CARBURETOR AIR BOX REVEALED THAT A PIECE OF THE AIRBOX FLAPPER AND FLANGE HAD BECOME DISLODGED AND OBSTRUCTED THE CARBURETOR INTAKE. SEVERAL LOOSE AND WORN RIVETS WERE DISCOVERED IN THE AIRBOX ASSEMBLY.