marker denotes the vicinity of the DH for category I approaches (the T-45C is equipped for Category I)
and progress points for categories II and III. You will cross the middle marker approximately half a mile
from the runway, at 200 ft AGL (this may vary depending on local terrain and minimums). The inner
marker denotes the DH for category II approaches and is a progress point for category III approaches.
You will usually cross the inner marker at 100 ft AGL. Fly the portion of the approach prior to intercepting
the localizer using VOR or TACAN (depending on the published procedure) (Figure 43). If you are using
Figure 43: ILS APPROACH PLATE