Photographed on delivery here on the 14th January on www.gonavy.jp was BAe.125-800(U-125A) N63600.The last 3 digits of this airplane's JASDF serial,028 are visible in the photo.This jet should become 12-3028.
Also seen test flying on this day here was the next JGSDF AH-64D JP 74510 with IIIATH markings.