Yes, this is scary. There is a considerable amount of fuel flowing thru a non conductive fuel line
and then the triboelectric effect could create sparks and a weak magnetic field... fortunately most modelers route the servo leads and the antenna away from the fuel pump and fuel lines, so this
problem don´t affect most planes. However, I don´t have any doubt that more than one plane
was lost by this problem, specially if it was equipped with a PCM receiver.