PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 53; Flight Crew Type 210
Communication Breakdown
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Incursion Runway
Flight Crew Took Evasive Action
Airspace Structure; Human Factors
While performing flight training in the pattern at ZZZ; a runway incursion almost created an accident. While 3 aircraft are in the pattern all using Runway XX and all pilots communicating on the CTAF frequency; Aircraft Y entered active Runway XX during the touchdown phase of our landing. The aircraft was not talking on radios but looked like he was going to stop at the hold short line so we made the decision to continue. On round out just before touchdown aircraft entered runway and a go-around was executed. We missed aircraft by about 10 feet. That aircraft then continued to taxi to Runway XY and departed. I called him on the radios and the pilot responded 'Sorry didn't see you.' He also stated he was using his radios but no other aircraft nor the FBO could hear him.
PA-28 flight instructor reported a critical ground conflict when an aircraft taxied onto the runway; requiring evasive action.