I don't think it's required, at all. Altho, you could ask the specific airline and ask if there is a place on their website where you can print off something to that effect. Or, if the ADA (or whatever states the ESD laws) includes the ESD info - print it off and bring it w/ you in case anyone says anything.
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~
°¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |