Small Aircraft; High Wing; 1 Eng; Fixed Gear
Flight Crew Private
Flight Crew Last 90 Days 50; Flight Crew Total 1200; Flight Crew Type 1000
Situational Awareness
Conflict NMAC
Flight Crew Took Evasive Action
Human Factors
Generally clear skies; wind out of the SW at 5-10.I was northwest of Anchorage on my way to AK12.   I communicated with MRI tower for the transition through MRI airspace and then southbound to Flying Crown Airport (AK12).  Flying Crown is just outside of Class C airspace and the Seward Segment.   If I am not handed off by MRI; I switch to CTAF as soon as I leave the Seward Segment in order to call out my intentions as soon as possible.  I switched to CTAF to call out my intentions - typically 'Flying Crown Traffic; [tail number]; O'malley overpass 1;000 feet inbound to land; fly the field north to south for wind and runway check -Flying Crown' I was just west of the airport (we are encouraged to fly and pattern to the East of the airport so as not to fly over a residential neighborhood); and called out 'Flying Crown traffic; [tail number]; mid field; will be left downwind for landing to the South - Flying Crown'As I crossed mid-field and started turning downwind (north); I glimpsed another aircraft at or near the same altitude (1;000 feet) - about my 10:00.  I stopped my left turn and he went by my left side approximately 250-300 feet away.Every day there are multiple aircraft flying directly over this airport; some at or near pattern altitude.  There are float planes; twins; all types.   I assume the float planes are coming from Campbell Lake which is under the Class C veil.Somehow pilots need to be advised not to fly over this airport at or near pattern altitude.
A PA18 pilot reported an NMAC in the vicinity of AK12.