Incident Overview
A flight instructor reported that a student pilot was performing touch-and-go pattern operations on runway 7L at Livermore Airport. The instructor stated that the student flared approximately 8 to 10 feet above the runway and abruptly reduced the throttle. This resulted in a very hard touchdown.
Instructor's Actions
During the subsequent bounce, the instructor took control of the aircraft and successfully initiated a go-around. The pilot then evaluated the aircraft systems for any possible damage and, concluding there was none, continued the flight.
Discovery of Damage
After the aircraft returned to Oakland Airport for refueling, the pilot noted damage to the left propeller. Maintenance personnel subsequently discovered damage to the left main wing spar.