At 1235 eastern time, an American Champion 7GCAA registered to the factory was damaged while landing at Frederick Municipal Airport. The flight instructor and private pilot were not injured. The pilot was executing his first landing in the airplane in an effort to obtain a tailwheel endorsement. After the airplane touched down on runway 23, it veered to the left at a 45-degree angle. The instructor assumed the controls and added full power. The airplane climbed back into the air and the CFI tried to realign it with the runway centerline. The airplane descended back to the ground and touched down hard on the left main landing gear, shearing the landing gear assembly from the fuselage. The airplane then departed the left side of the runway, where the left wing dug into the ground.