Federal Aviation Administration spokeswoman Holly Baker says the plane went down about 11:20 a.m. Saturday in woods southeast of Franklin/Venango Regional Airport in Sandy Creek Township.
State police in Franklin say both people on board were killed, but their names aren't being released.
The plane was a Nadiq, a fixed-wing, single-engine craft generally built by hobbyists and amateurs.
The FAA is investigating what caused the crash. Baker had no further details.