at ab 10:31 don't remember exactly the Nav. said "distance to axis 5 km"
they were still "building the box" don't know the equiv. in English, say doing routine ? flights in a square above the aerodrome.
so they are up there, their 10 km count down hasn't began yet?
anyway this distance to - can be ? - runway axis - they knew themselves. from inside the plane. without any ground controller saying anything. Could be the distance to runway when they were flying by the side of it.
q-n how did they know? was runway location fed into some systems on board, which gave them the distance to it. Who fed it in, what were they using for orientation.
Could it be they have been orienting by the same thing later on? Trusting that system data re their position all along? An addit. confusing factor - or did it actually work well and was may be neglected.