When hooking up a ground wire system internal to the aircraft you want good
connections so that all the static energy is released when grounded. But you
want a resistor attached to the external ground wire to prevent a spark when
you touch it to the aircraft. The resistor allows for a slow drain (on the
order of no more than 1/2 a second) of the built up energy. But keep in mind
that the soldered connection of the resistor is a fail point that needs to be
checked on a regular basis. Since you no longer will see any spark when
connecting, you won't know if it's working or not.
Mike
A207
Redding, California
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