EU rule 859/2008 , OPS 1.305, appendix 1 :
Refuelling/defueling with passengers embarking, on board or disembarking...
(9) The ground area beneath the exits intended for emergency evacuation and slide deployment areas
must be kept clear; and
(10) Provision is made for a
safe and rapid evacuation.
it doesn't say that engines must NOT be running, but - to me - it's a big nay...
