Small Aircraft; Low Wing; 1 Eng; Retractable Gear
Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Instrument
Flight Crew Last 90 Days 32; Flight Crew Total 3330; Flight Crew Type 1418
Conflict NMAC
General None Reported / Taken
Human Factors; Procedure
On direct flight from HIO to the coast at 4;500 FT MSL; my grandson in left front seat was setting up to take pictures w/his iPhone while my wife was right hand rear passenger. While westbound over Pacific Coast range; approximately half way between HIO and the coast; my grandson exclaimed; 'Wow; that was close.' Having seen nothing; I asked what he saw; after landing; I questioned both passengers about what they observed. Left front passenger stated he saw a blue single engine aircraft descend from above; right to left; just missing our left wing. Right rear passenger reported only a flash from right to left. I neither saw nor felt anything. I was monitoring 122.9 at the time. My aircraft has no autopilot. I was maintaining heading and altitude with no weather obstructions.
A pilot flying from HIO to the coast reported a near miss with an unidentified aircraft which both his grandson and wife saw momentarily; but he did not.