It’s been described as “potentially serious.”
He was coming in for landing at John Wayne Airport down in Orange County. He called the tower, got clearance to land on a runway. He repeated the call back to the tower as confirmation, and all was correct. But that’s where it went wrong.
He was coming in for landing, and rather than landing on runway 20L, he actually landed on a taxiway that runs next to the runway. Problem was, there was a passenger airliner, a Boeing 737, loaded with 110 passengers and 6 crewmembers. He missed the plane, but had he made contact, it would have been a disaster.
Still unaware he was landing on a taxiway rather than the runway, he calls the tower. “Was that airliner meant to be underneath me?”
Harrison has a record of rough landings, crashes and close calls. Remember when he landed the WWII plane on a golf course after the engine failed? The FAA is investigating the incident.