Any Unknown or Unlisted Aircraft Manufacturer
Flight Crew Instrument; Flight Crew Private
Flight Crew Last 90 Days 15; Flight Crew Total 210; Flight Crew Type 210
Communication Breakdown; Time Pressure
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Other / Unknown; Inflight Event / Encounter Other / Unknown
General None Reported / Taken
Airspace Structure; Human Factors
I had just landed south and taxied off the runway. I had noticed someone at the hold short line when I landed on runway XX. When I taxied off it looked like someone was doing their run-up near runway XY. There was one radio call that said that someone was taxiing onto XX however as I heard this I saw the other Cessna taxi onto XY. I simply keyed the mike to say 'umm; that's XY' - I should have been more forceful and told the plane on runway XX to return to the taxiway. Turns out the guy started rolling on XY and he was NORDO (No Radio). 5500 ft long runway made it impossible for him to see the other side of the field.Could have been a very close call. I should have said even more. I realized that a major accident could have taken place (two planes taking off in opposite directions); but I'm still unsure what I should have said...Seems like commercial operations in class E should not be able to work NORDO. Just because you legally can in that airspace doesn't mean you should. Furthermore; everyone that day was a Cessna. It did me no good to trouble shoot the position of these planes since they were just referring to themselves as 'Cessna taking active runway XX'The departing pilot from XY eventually turned his radio on and apologized. He took off over the conflicting traffic (that was on the runway first for the record). They saw the plane coming right at them so they stopped.
GA pilot reported observing two aircraft begin to takeoff from opposite ends of a runway at a non-towered field.