A small plane coming in for a landing at the Fallbrook Air Park ran out of runway and made a left, causing the plane to roll over, officials said.
The Cessna 182, a part of the Civil Air Patrol, landed shortly after 1 p.m. Wednesday at the air park, located at 2155 S Mission Road. The Civil Air Patrol is the longtime all-volunteer U.S. Air Force auxiliary.
The plane was on an authorized proficiency flight with two pilots on board when it landed on the runway, but ran out of space.
The pilot made a left at the end of the runway and the plane rolled over, fire officials said.
The two occupants inside, a 77-year-old man and a 79-year-old man, suffered minor injuries.
The aircraft suffered "substantial damage", Federal Aviation Administration (FAA) spokesman Ian Gregor said.
No one was trapped inside, fire officials said.
FAA and the National Transpiration Safety Board (NTSB) officials will investigate the crash.
No other information was immediately available.