Jose wrote:
All of those have a separate LOC procedure, which cannot be switched to midsstream.

Why could one not switch midstream? Assuming the LOC course is the
same, if the GS goes out, fly level until the next stepdown.

Jose


It is fine to switch mid stream. Looking at the BTM approach, I suspect
the only reason the LOC and ILS are published as separate charts is
because several significant differences in IAF, glideslope intercept
altitude and Missed Procedures. The chart would be way too cluttered if
presented on one sheet.