I just surfed a bit on the web and found a picture of the cabin of Transaero's B747-200 VP-BPX showing PTV's! Does anybody know, if every Transaero aircraft has PTV in all classes or is it an exemption?
I don't think that the PTV's were installed when they bought the aircraft. So they must have installed them just when they bought the aircraft. Or has anybody ever seen PTV on a B747-200? I haven't! Anyway it's interesting to see PTV's newly installed on a 25+ years old aircraft.
Photo © Konstantin von Wedelstaedt
Here is the pic of the cabin.