Possibly thread drift (development?
) here, but at the minima on the bottom of that plate, it states 650m RVR is required, or 1200m RVR with APL U/S. Is one correct to assume APL means autopilot? If so, I take it if being hand flown or the autopilot drops out, then the approach ban works in the manner we're accustomed to with required RVRs and continuation of the approach being dependent upon your position relative to the OM or equivalent position? Why is there such a restriction placed on the use of automatics when the flight director guidance on a GNSS approach is identical to that of the ILS which places no such restriction down to Cat I minima? (Or even Cat II/III if properly equipped come to think of it). If one were to lose the flight directors then the "raw data" could still be displayed between the ND and the FMC progress page for vertical and lateral deviation respectively on the platform I'm familiar with at least, although it would be a somewhat awkward scan granted. Any info much appreciated.