Flight Crew Commercial; Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 90; Flight Crew Total 1850; Flight Crew Type 385
Communication Breakdown; Situational Awareness
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Executed Go Around / Missed Approach
Human Factors
I was holding short of the runway and was aware there was traffic incoming (Last radio call was 20 miles I believe). I called and asked for position of the inbound single engine aircraft two times; and no radio call was announced. I also checked my garmin unit for ADSB data and there was none. I made the decision to announce a back taxi radio call on Runway XX and proceed onto the runway to back taxi. At about 1;000 feet left; I noticed a plane executing a go around on the runway; and flew over me at approx an altitude of 200 feet above. I then called if he was on frequency and he responded 'yeah'. I asked if he made any radio calls and he said 'no I missed the last radio call'; and asked if he heard my back-taxi call to which he responded yes. I proceeded to turn around at the departure end of the runway and depart without incident.  In summary I made 3 radio calls that were unanswered; did a visual search before entering the runway before back taxi; and checked for ADSB to see if the plane was in the airport environment before my decision to back taxi.
Pilot reported after announcing on Unicom intentions to enter runway and starting to back taxi; an opposite landing aircraft performed a go-around.