Small Aircraft; Low Wing; 1 Eng; Retractable Gear
Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 50; Flight Crew Total 4700; Flight Crew Type 1200
Confusion; Distraction
Conflict Ground Conflict; Less Severe; Ground Incursion Runway
Flight Crew Became Reoriented
Human Factors
[Aircraft] was on IFR flight plan from BTF. When close to BTF and below the Class B floor; which was 7;500 MSL; I cancelled IFR and I was supposed to switch to Advisory; 122.8.I was looking for runway 34; because although I was only slightly familiar with BTF; my passenger; in the right seat; was also a pilot and was very familiar with BTF.  He told me I could go straight in to Runway 34. We were too close to BTF after the tower handoff; but I got Runway 34 in sight and descended to land.We did not realized that 16 was active; and when I landed; there was a Piper Archer who exited runway 16 to get out of my way.  I should have switched to Advisory and circled over the airport traffic pattern and listened to advisory and would have realized I was planning to land the wrong runway.  Part of the problem was the wind was light and variable and either runway could have been active; and I also put too much faith in my passenger to know what was going on; even though neither of us realized the problem until we landed. Also; during this flight; my right seat passenger was trying to become more familiar with [the aircraft] because he was interested in purchasing one; and this distracted me from my usual procedure to set up a visual approach far ahead and have everything planned and understood in advance.
A pilot neglected to switch to the Advisory Frequency for his intended airfield and landed the wrong way on the active runway.