The PVD's on ZK have always been black and white,i have 4 spare PVD's removed from ZU,ZO,ZZ and FG they are all the same black and white not heard about the black and yellow ones?.i even checked out with a freind of mine Captian Tony Angus,Tony was the base training chap,he also conducted the CAA acceptance flights on Trident One's Two's and Three's and he agrees that they are black and white.
Rgds
Neil
