The pilot reported encountering a downdraft “that dropped the [air]plane below the glide slope” while on short final. He immediately noticed a reduction in airspeed. The pilot applied power and “pulled the nose up in an effort to regain proper altitude.” Subsequently, the airplane landed “very hard” and collapsed the nose landing gear. Examination revealed the firewall was bent and the fuselage behind the aft seating area was buckled. The pilot reported no anomalies with the airplanes systems prior to the accident.
