Good morning. Question about Navigraph and x-plane. I can’t see KMEM LOC 27 approach in x-plane, would getting Navigraph allow me to load that approach into x-plane?
Hi,
Yes of course, here the ILS27 into KMEM, XP12 from the stock G1000 with AIRAC 2504:
Hope that helps,
Richard
PS: When the charts mention ILS or LOC, only one is coded normally, depending on the coding rules.
Hi Richard, thanks so much. Got it, ILS in green needles for LOC only 
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You´re welcome. Yes, normally, the ILS is coded, but there are situations (e.g., when the missed approach starts prior to the runway threshold) where only the LOC portion is coded.
Happy flying, and have a good day! Don´t hesitate to contact us again if you have any questions!
Richard
Okay, got the Navigraph subscription.
Updated x-plane.
But the KMEM 27 ILS isn’t complete.
Missing IPEPE
Missing altitude for GRNND 1900A
What am I doing wrong?
Replied in the discord already, for completeness’ sake the definition of “stepdown fix”:
As a glideslope is expected to provide, in most if not all cases, a “secure” flight path that will not take you dangerously close to obstacles, stepdown fixes would not considered relevant to ILS approaches. There are a number of conventional (opposed to RNAV-based) procedures which cannot be coded with ARINC-424, and it is expected that pilots can hand fly those approaches without them available in the nav database. LOC procedures where an ILS procedure exists can actually be coded (in fact LIDO/NB include them), but Jeppesen may consider unnecessary to include them, wanting to not fill up the db with approaches that will be rarely used (the GP part of an ILS will seldom be turned off while the localizer remains active), or for any other good business reason.
I’ll check the FMS when I’m back flying, but I am 99.9% sure that fix is in the box. We use it in the sim (level D) for the circling approach. It really should be in the box.
It is, just not included in a procedure in the Jeppesen db provided by Navigraph.
Here in LIDO/NB, as you can see it’s part of the LOC but not the ILS approach.
Okay, so how do I get the full approach with IPEPE into the FMS like we have in the real world? What am I missing here?
Hi again,
As I have mentioned in my previous post. When the approach is coded as ILS or LOC, only one is usually coded depending on the approach. So, in this case, Jeppesen doesn’t offer the LOC approach.
But you can select the ILS approach, manually add the step-down fix IPEPE in the sequence, and fly it as the LOC approach. That’s the usual way when you want to fly it (at least here in Europe).
Cheers
Richard
According to the FAA chart, IPEPE is a fix identified by a VOR crossing radial.
So a legal way to identify it would be to tune MEM (117.5) on NAV2 and use the CDI2 to identify the 052 radial. When you are centered on the LOC on NAV1, and NAV2 indicates centered on the MEM-052 radial, you can commence the descent to the lower minimums (720 for the straight-in landing).
As to why some LOC step down fixes are coded and not others I think depends on the government definition of the fix. If you look at KTTA LOC-Y 3 you see it is a very similar situation - the step-down fix is coded for the LOC approach, but not the ILS approach. Here, the fix is coded separately because it is DME-based. In the US, it is legal to fly IFR without a DME, so you have to have some alternate means to find the step-down fix. My guess is that’s the reason Jeppesen provides the separate approach coding for some airports (where the step-down is DME-based) but not others (where the step-down is radial based).
I’m not really sure what to say.
In the airplane (real life) we can load the LOC 27 approach and it has that fix in the box.
That’s just how it is. It’s also like that in the level-D sims.
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