What happened
A Stinson 108-3, registered as N12HK and flown by a private pilot, collided in mid-air with a Cessna 152, registered as N46757 and flown by a student pilot. The incident took place while both aircraft were cruising at an altitude of 5,500 feet mean sea level.
The pilot of the Stinson reported maintaining a magnetic heading of 130 degrees and indicated an airspeed of approximately 80 knots (92 mph). Simultaneously, the student pilot of the Cessna stated he was tracking a VOR radial with a heading of about 150 degrees and indicated an airspeed of 95 knots. Neither pilot reported seeing the other aircraft prior to the impact.
During the collision, the propeller of the Cessna struck the left main landing gear and the lower fuselage skin of the Stinson. Following the impact, the pilot of the Stinson continued his flight to Ramona, California, where he landed with substantial damage to the airframe. The engine of the Cessna stopped running after the collision, although the propeller continued to windmill. To prevent the engine from restarting, the student pilot closed the mixture control and executed a successful forced landing at Rancho Airport in Temecula, California. The Cessna sustained minor damage to its propeller, spinner, engine cowling, and the leading edge of the right wing.
The investigation
Investigation details regarding mechanical failure or specific maintenance records were not provided in the source material. The focus remained on the flight dynamics and pilot actions surrounding the collision event.