Small Aircraft; High Wing; 1 Eng; Fixed Gear
Flight Crew Private
Flight Crew Last 90 Days 20; Flight Crew Total 300; Flight Crew Type 150
Conflict Airborne Conflict
General None Reported / Taken
Airport; Chart Or Publication; Procedure
On a VFR flight from HTL to 48D in day VMC with unrestricted visibility and high ceilings; with a right seat Private Pilot passenger. Briefed that Runway 09/27 at 48D was NOTAMed closed; and elected to land Runway 22 given westerly winds and NOTAM.  I made multiple callouts on CTAF including base and final.  During rollout; the pilot passenger noticed and informed me of a remote-controlled RC aircraft ahead; apparently above Runway 09/27 but overflying the extended centerline of Runway 22; about 600ft from the end of Runway 22. I did not myself see the RC aircraft. Upon safe landing and shut-down we became aware that there was an RC aircraft group operating at a series of RVs south of Runway 09/27 and that this was the reason for the NOTAM. While it is completely acceptable to have RC aircraft operations in an airport environment given NOTAMs; RC operators should be briefed to avoid overflight of an extended centerline for an active runway. Alternatively; if RC operations require the overflight of an extended centerline of another runway; that runway (or the airport) should be NOTAMed closed as well.If we were either performing a touch-and-go; or had to perform a go-around; the RC aircraft would have been directly in our path and would have posed a collision risk.
General aviation pilot learned of remote control aircraft operations after landing. If a go around or aborted landing occurred there could have been a conflict between the fixed wing aircraft and the remote control aircraft.