Trinidad TB-20
Flight Crew Instrument; Flight Crew Commercial
Flight Crew Last 90 Days 36; Flight Crew Total 2625; Flight Crew Type 1000
Communication Breakdown
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Took Evasive Action
Human Factors
We were the fourth plane in a row to land on RWY XX at ZZZ.  I had my landing lights on for visibility.  Aircraft Y was holding short.  I made radio calls on the 45; downwind; base; final and short final. When I was within a few hundred horizontal feet and about 75 feet above touchdown; Aircraft Y pulled onto the runway without making a radio call. I radioed for him to stop but he kept going. I raised my landing gear and commenced an emergency climb. During the procedure I estimate that I passed 25 feet over him. I made several more radio calls on the CTAF but never got a response. He continued his takeoff and was behind me as I climbed. Aircraft Y apparently was not listening to the radio even though three planes landed immediately before me. Even more serious is that he apparently never even looked to see if a plane was on final although the weather was perfectly clear and I had my landing lights on. This came very close to being a disaster.
TB-20 single pilot reported an NMAC event during landing with a non-reporting aircraft that abruptly initiated a takeoff.