While is it difficult for fluid flow to transport static in comparison with
vehicles scraping over the ground as the boundary layer is stationary,
distributed sheer, and conductivity if additives present, if you want more
peace of mind why not use a totally enclosed delivery a la yachtsmen ? The
nearest chandler stocks automatic valves for pipes which fit plastic
containers similarly endowed for setting up a syphon. Or, by pressuring the
container a little you can pump it all with a 12v electric pump (pressure
limited) from the ground outside the aircraft to a junction on the filler
hose (or a modified filler cap). The only vapour exits the vents where it
always will anyway. Takes longer but you can fill the time loading luggage
and checking your flightplan etc.
Incidentally attaching a pipe to the ground from the vents invites siphoning.
Before the internal 'forward looking pipe' mod. I found mine once steadily
pouring fuel over the rear fuselage in a hot sun, event without a pipe !
Graham C G-EMIN
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