LVTO RVR measurements

[Boroda]

At what visibility and at what RW parts do we have to have RVR measurements for LVTO for 320 or 330? I have met only such statement "at all required parts" but "required" is too indefinite.

Thanks.

[FE Hoppy]

Within your accel stop distance required.

[Henry VIII]

And it's a general JAA rule, not limited to 320/330.