AN/APN 241 in C-130 Technical Posted June 15, 2010 I submitted an AFTO22 to explain how the 26VAC is used by the anti-skid system during self test. I was told by the "subject matter expert" that the technicians didn't need all that information. I would venture to say you just taught your "SME" something "he" never knew. I also wouldn't be surprised if your suggestion ends up silently slipped into the tech data a few months down the road. I've seen it happen.