Small Aircraft; Low Wing; 1 Eng; Retractable Gear
Flight Crew Instrument; Flight Crew Private; Flight Crew Multiengine
Flight Crew Last 90 Days 20; Flight Crew Total 1800; Flight Crew Type 350
Situational Awareness
Conflict NMAC
Flight Crew Took Evasive Action
Human Factors; Procedure
I was flying in visual conditions along the shoreline south of SLI VOR in a northwesterly direction while descending to land at ZZZ. I was above the SNA airpsace at 5500 MSL. A B737 flew underneath me traveling in a northeasterly direction. I estimate the clearance at approx 500 ft. I saw the 737; stopped my descent and turned northerly. The airline did not take evasive action. I proceeded uneventfully to ZZZ and landed.
Small aircraft pilot reported an NMAC with a B737 in the vicinity of SNA airport.