Caravan Undifferentiated
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Commercial
Flight Crew Last 90 Days 150; Flight Crew Total 3500; Flight Crew Type 2100
Communication Breakdown; Situational Awareness
Conflict NMAC; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Took Evasive Action
Human Factors; Procedure
Near Mid Air Collision with Light Sport [Aircraft] when pilot announces West departure from runway 8 on his downwind departure leg westbound cuts across center line of my announced 26 straight out departure; at [this airport] this is common procedure; all local traffic know as well as Unicom. Unicom was up at this time. Evasive action taken; immediate left turn away from [conflict aircraft] and towards ridge.I am filing this Near Mid Air incident now as evidence of a systemic problem and following a recent runway incursion. This is the third time (first for me) happened once to other [pilots]. [This Light Sport pilot] has gone head on into a Caravan departing runway 26; the first two times required Caravans to abort take off roll; [the pilot] continued runway 8 take off; no communication. This incursion I aborted takeoff roll; and he taxied off the runway and said go ahead.
C208 pilot reported several traffic conflicts with a light sport aircraft at their home airport.