There's a deaf church in Lanham MD that my wife and I used to attend; our daughter was baptized there. I would have to say yes, signing the Mass is licit.
Oh, good! I’ll have to read that. I knew there must be an alert, well-informed FReeper out there who would know the answer.
Anyway, even people who aren't deaf, or don't have deaf loved ones, can, I think, benefit from this discussion. It illuminates the two underlying points: on the one hand the language is deeply important, but on the other hand not all elements of "style" are worth yelling and griping about, if the words say the right stuff.
BTW, I like reading the Spanish version in the missalette, because I'm not so very good in Spanish. . It's paradoxically, an advantage, because I have to slow way down and mull it. So I can grasp the different way it expresses what's in the editio typica and it --- I can't 'splain it --- makes my neural net sparkle.
Do they have a hymnal?