Does anyone know if the in-flight refuelling system is still serviceable?
Yes, I do
and
No, it's not
The IFR system on the XH558 has been disabled for many years, prior to her delivery at Bruntingthorpe. As XH558 will never again need to be filled to max, she will also never again need the In Flight Refuelling capability, so this system was never considered for repair.
That is not to say that 558 couldn't partake in a spot of 'Dry Prodding Action'
However, whether the crew would deem that to be worth the risk to the newly restored, sole flying example of an Avro Vulcan, is another matter!!!
Flipflopman