NTSB Factual Report

The pilot of the Cessna 140 was practicing crosswind landings. He stated that during the landing attempt, he flared the airplane "too soon." The airplane bounced hard on the runway, and began to bank left. The pilot corrected with aileron and rudder, and the airplane tracked to the right. The left main landing gear made contact with the runway, and separated from the airframe. The propeller, fuselage belly, and left wingtip contacted the runway surface, and the airplane came to rest. The airplane sustained substantial damage to the firewall. The pilot reported no mechanical anomalies with the airplane.

NTSB Probable Cause

The pilot's improper flare, which resulted in a hard landing.