Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Private
Flight Crew Last 90 Days 15; Flight Crew Total 1200; Flight Crew Type 1190
Communication Breakdown; Situational Awareness
Conflict NMAC; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Took Evasive Action
Procedure; Human Factors
Before entering Runway XX I announced my intentions to depart and leave the area on a southeast heading. After my rollout about 400 feet down the runway I heard a helicopter pilot report his departure from the field left of Runway XX. He would be heading south. When I was airborne and climbing out I looked to my left and saw said helicopter about 100-150 feet off my left wing. I performed a hard climb and continued on runway heading until clear of the other aircraft.
Cessna 350 pilot reported taking evasive action after takeoff due to a helicopter executing a simultaneous takeoff from the opposite end of the runway.