PA-44 Seminole/Turbo Seminole
Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 80; Flight Crew Total 5000; Flight Crew Type 200
Other / Unknown; Physiological - Other
Conflict Ground Conflict; Critical; Ground Incursion Runway
General None Reported / Taken
Human Factors
I was departing. After the completion of my runup; I completed a 360 degree turn in order to check for traffic prior to departing on Runway XX. I stopped the aircraft at a 45 degree angle to the hold short line; pointing the aircraft to final so that I could have the best view of final approach. I heard an aircraft call base to final for [Runway] XX; and I spotted that aircraft; approximately 3 miles out. I made a radio call that I was 'departing Runway XX' and began to taxi into position. While doing so; I saw an antique tailwheel aircraft conduct a go-around above me. I continued with the takeoff; as to not cause issue with others in the pattern; especially with the aircraft on final. I offset my departure leg to the right; as I was faster than the aircraft ahead of me (that conducted the go-around).I have spent the last 2 days thinking about how I; a seasoned pilot; CFI; and FAA safety team member could have made such an error. The events were 100% my fault; and there were numerous compounding factors that I now realize.1) The aircraft on short final did not have a radio.2) I fixated on the aircraft that called base to final; not scanning all of final.3) I was picking up an aircraft from a paint shop; so I had potential mechanical issues on my mind. The main reason I am providing this report; is that I was shocked that I was very deliberate in checking final prior to departure; and yet I still missed the aircraft without a radio. I will now emphasize to my students that we have blind spots. We can not fixate on an object or a space and expect to see all the objects in that space. We must continually scan to pick up any conflicts. The pilot in the antique aircraft did a good job seeing and avoiding. I wish; he had a radio; only so that I could contact him to express my apologies. I was not negligent or taking shortcuts. I am adamant about checking for traffic. We will never stop learning in aviation; and this was a wake up call; and a great lesson for me. Doing things right is very important; because even then; you have room to do it better. I am glad that this experience has educated me further; so that I may continue to educate and promote safety in aviation.
PA44 pilot reports clearing the final approach path with a 360 degree turn before announcing a takeoff on CTAF.  An antique aircraft executes a go-around as the reporter enters the runway.