Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 90; Flight Crew Total 2300; Flight Crew Type 2300
Situational Awareness
Conflict NMAC; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Human Factors
While on downwind to runway 30 at LVN at 1800 ft MSL; an unannounced aircraft flew 100 ft over the top of us in the opposite direction.  When queried over the radio as to what the aircraft was doing; he said he was setting up to enter a downwind for 30.  I suggested that he enter the pattern from further out at a 45 degree angle; rather than on top of downwind.
C172 instructor pilot reported a NMAC with opposite direction aircraft in the pattern at LVN airport.