This may seem like a silly question but does this only apply to EU registered a/c and operators or just within the EU?
I only ask as several non EU reg a/c often never have flt deck occupied during refuelling whilst pax on board. Certainly in my experience only one operator ever asks to speak to the refuelling operative (eng) while fuelling continues.
So what gives? Is the Shell/BP chap required to don a headset? Does the engineer chap need to stop his routine or ad-hoc maintenance just to stand around with the refueller?
I am confused.