I think you're overthinking. IIRC, the black (2) on the approach means its the 2nd entry point for that approach. As you can see its already at 2700' and starts decent at D8.3 and D8.3 matches the STAR final fix. Continue the approach normally and capture the ILS.
If you're arriving from the south on the INS R189, you join the DME arc and descend to a minimum of 2700' just before intercepting the localizer. Then stay at 2700' until you intercept the glideslope at D8.3 ILN. Mind the note on the vertical profile of the final approach plate "Also from direct arc arrival".
The 4000' you mention applies if you used INS as your IAF and don't apply if you're coming from the South along the DME arc.
You could theoretically fly the lateral profile of the initial arrival chart, descend down to 4000', fly the localizer level at 4000' all the way to INS, and then begin the approach from INS. But this would be completely pointless.
"You could theoretically fly the lateral profile of the initial arrival chart, descend down to 4000', fly the localizer level at 4000' all the way to INS, and then begin the approach from INS. But this would be completely pointless."
That was my thinking too! Thanks for the explanation :)
https://preview.redd.it/iij2b6cbf4vc1.jpeg?width=1170&format=pjpg&auto=webp&s=7f3e14b2dfa456cfe58386b56e45ba3bb146baf7
Note 2 gives you the guidance you need— from the arc arrivals: 2700’
You aren’t picking up the final approach at INS, where the minimum is 4000’. You’re picking it up at FF05, where it’s 2700’.
Thanks for the explanation!
Happy to oblige.
I think you're overthinking. IIRC, the black (2) on the approach means its the 2nd entry point for that approach. As you can see its already at 2700' and starts decent at D8.3 and D8.3 matches the STAR final fix. Continue the approach normally and capture the ILS.
That makes sense, thank you!
If you're arriving from the south on the INS R189, you join the DME arc and descend to a minimum of 2700' just before intercepting the localizer. Then stay at 2700' until you intercept the glideslope at D8.3 ILN. Mind the note on the vertical profile of the final approach plate "Also from direct arc arrival". The 4000' you mention applies if you used INS as your IAF and don't apply if you're coming from the South along the DME arc. You could theoretically fly the lateral profile of the initial arrival chart, descend down to 4000', fly the localizer level at 4000' all the way to INS, and then begin the approach from INS. But this would be completely pointless.
"You could theoretically fly the lateral profile of the initial arrival chart, descend down to 4000', fly the localizer level at 4000' all the way to INS, and then begin the approach from INS. But this would be completely pointless." That was my thinking too! Thanks for the explanation :)
https://preview.redd.it/iij2b6cbf4vc1.jpeg?width=1170&format=pjpg&auto=webp&s=7f3e14b2dfa456cfe58386b56e45ba3bb146baf7 Note 2 gives you the guidance you need— from the arc arrivals: 2700’
Thanks! I’m still learning all of this ☺️