Harrison Ford had a little incident at John Wayne Airport in California.  He was bringing his private plane in for a landing, and he got cleared for one of the runways.

But instead, he landed on a taxiway that was parallel to the runway, buzzing right over a Boeing 737 that was waiting to take off.

Sources say Harrison was even recorded by air traffic control saying, quote, "Was that airliner meant to be underneath me?"

Landing on a taxiway is a violation of FAA rules, and they're investigating.  If there's punishment, it could range from a warning letter to a suspension of his license.

Harrison is regarded as an excellent pilot, although he's had a few scary incidents . . . including a pretty bad crash in Santa Monica in 2015.

Harrison had to make an emergency landing on a golf course after the engine quit on the World War 2-era plane he was flying.  He suffered a broken pelvis and ankle, as well as other injuries.

This isn't the first time he had trouble with his plane...