Well, in the document mentioned, there is a clear difference between grounding and bonding. Bonding refers to various items connected together, while grounding specifies a connection made with the ground. There are several pictures in the document to illustrate this.
As for the refueling truck, it is usually grounded (often along the refueling line to the underground tank) AND bonded to the aircraft. The wording can be indeed misleading in the presentation, but one can expect that a typical refueling truck shall not try to ground while refuelling, as often the grounding connection is only centimeters aways from the ground fuel connector. This could meet a nasty end.
I am still surprised to see how many refueling operators are removing the bonding/grounding leads at the end of the refueling, before the refuel hose is disconnected. Although I do understand that any difference in potential should have leveled out, there is still a small risk. Lack of training or disregarding the rules to save a few seconds?
Last edited by FLEXPWR; 27th Jun 2014 at 11:55.
Reason: typos