I proved my theory to 6 or 8 onlookers by removing the filler cap! There's more. It was a non English speaking country, and I succeeded in buying fabric softener powder rather than washing powder. There's more. I only took one flying suit!
I learned about being a dick from that!
Once, in NI we landed for a briefing for an "op". The refueller for some reason decided to refuel the aircraft while were were away and filled the ferry tank first. Unfortunately it was still switched on so he unwittingly proceeded to refuel the entire aircraft through it; it must have seemed like the biggest ferry tank in the world.
He then took off the #2 filler cap to begin refuelling the main tanks - which of course were already bulging.... he got a very nasty surprise due to 100 gallons of jet fuel under pressure waiting to get out! !
When we got back he was like the Dutch boy with this finger in the leaking dyke - he couldn't get the filler cap secured so was having to lean on it with all his weight. He was drenched in fuel.
Lessons were learned all round.
