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Is auto-landing the PMDG 737-800 on KSJC ILS 30L possible?

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Two questions:
1. Auto-land on KSJC ILS 30L
2. LNAV on the ground on KSFO ILS 28R

Is the PMDG 737-800 able to auto-land in ALL MSFS 2020 airports?

I have no problem auto-landing on KSFO ILS 28R. But for some reason I simply can't auto-land on KSJC ILS 30L. 

Is it because KSJC ILS 30L has office building near it?

My route: KSFO/28R DCT SFO DCT OSI DCT KSJC/30R (IAF is KLIDE). The ILS course for KSJC is 306 and the ILS frequency is 110.9.

On a similar note, regardless of what I do, I can't activate LNAV on the GROUND on KSFO's 28R:

1. Both FDs are on. The captain's FD is MA
2. Auto-throttle is off
3. Route has no discontinuity
4. VNAV on the ground is ok
5. LNAV on the air is ok
6. A custom waypoint (place bearing waypoint) 2-3 miles is DIRECTLY in front of the plane

I'm able to activate both VNAV and LNAV on the ground in other airports eg. KPDX. Bbut LNAV on the ground on KSFO's ILS 28R simply doesn't work. Why is that?

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  • Stearmandriver
    Stearmandriver

    Second autopilot can be selected immediately after you select approach mode.  IF you're receiving ILS signals and therefore don't enter IAN mode, both autopilots will show selected at that point. 

  • Stearmandriver
    Stearmandriver

    This is definitely untrue.  You're getting far too down in the weeds with this. From a technical standpoint, all the real airplane requires to auto land is an ILS.  That's it.  There are regulato

  • He is a real 737 pilot for Alaska Airlines who knows how it works. He has spent considerable time trying to help you, and your attitude in response leaves much to be desired. 

You can't activate LNAV on the ground there because the first waypoint isn't within a certain degrees off centerline.  You need a SID out of there.  

  • Author
3 minutes ago, ATRguy said:

You can't activate LNAV on the ground there because the first waypoint isn't within a certain degrees off centerline.  You need a SID out of there.  

But shouldn't it work since I created a custom waypoint which is the 1st waypoint I inserted in the route in the FMC (after SFO)?.  The route I included above is from Simbrief and shows the route before I inserted the custom waypoint 2-3 miles in front of the aircraft and after the SFO waypoint.

  • Author

Problem about the LNAV solved. I figured out what I was doing wrong which was where to create a revised PBW (the correct waypoint, SFO02 is shown below).

Now, if only someone can tell me if the 737 auto-land in all MSFS 2020 airports. Why can't I auto-land on KSJC's ILS 30L?  Are the tall-ish office buildings on the way of the ILS?  I don't get it.

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6 minutes ago, anavsun said:

Problem about the LNAV solved. I figured out what I was doing wrong which was where to create a revised PBW (the correct waypoint, SFO02 is shown below).

Now, if only someone can tell me if the 737 auto-land in all MSFS 2020 airports. Why can't I auto-land on KSJC's ILS 30L?  Are the tall-ish office buildings on the way of the ILS?  I don't get it.

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You should be able but there is stepdowns on that approach.

You shoud be able at least after HIVAK and no later than 1500 feet if i recall from memory (AP A or B activate -both)

Michael Moe

Michael Moe

 

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  • Author

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Edited by anavsun

  • Author
55 minutes ago, Michael Moe said:

You should be able but there is stepdowns on that approach.

You shoud be able at least after HIVAK and no later than 1500 feet if i recall from memory (AP A or B activate -both)

Michael Moe

@Michael Moe

Are you saying that at the OSI waypoint I should reset my MCP altitude to the HIVAK waypoint to 2700 ft instead of to the KLIDE waypoint at 4000 ft?

What I've been doing after OSI I...
-set autobrake to max
-arm speedbrakes
-flaps to 1
-decreasing speed at Decel
-reset altitude from 5000 to 4000 ft (before T/D) at the MCP
-course to 306
-getting ready to press VOR/LOC
-getting ready for APP, gear down, and CMD B

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KSJC is not a Cat III ILS and won't auto land.  I tried, it did not work.  KSFO 28R worked. 

 

Edited by aniiran

  • Author
19 minutes ago, aniiran said:

What you should do is learn to fly the ILS without a flight plan or anything programmed into the FMC.

Nice suggestion. Thank you. So hand fly a left pattern. I'll try this.

21 minutes ago, aniiran said:

I suspect the reason that you aren't able to get this down is that you are too high.

Correct. Too high and too fast.

24 minutes ago, aniiran said:

If you want to test it Automatically with the magenta line and LNAV.  Program 30R FOXAG, NUNLE, VPDLR and keep your altitude at 3000. you need to be below 4000 at KLIDE 3000 is probably best.

What do I do about the 4000 ft height restriction at KLIDE?



 

2 minutes ago, anavsun said:

Nice suggestion. Thank you. So hand fly a left pattern. I'll try this.

Correct. Too high and too fast.

What do I do about the 4000 ft height restriction at KLIDE?



 

You can be at 4000 if you want its 16NM out. you just have to be ready to hit the CMD B/APP buttons.    At 3000 is just for proof of concept to make sure it works but as I found out KSJC has no CATIII ILS and therefore no Autoland.  KSFO 28R is CATIII that's why it works there. 

  • Author

Thanks.  Good info. I need to start paying closer attention to the ILS categories.

I have a basic question. Without a route plan with no destination or any data entered in the FMC, while hand flying at free flight at an altitude of 3000, can I insert a new waypoint ahead of me to fly to eg. KLIDE?  How?

Have you tried entering the waypoint into the LEGS page and hit EXEC.

  • Author
12 minutes ago, YMMB said:

Have you tried entering the waypoint into the LEGS page and hit EXEC.

Yes.  I took off from a runway without touching the FMC.  After reaching an arbitrarily selected speed, altitude and heading I pressed CMD-A. I then entered in the FMC a waypoint that was more-or-less on an intercept course with the plane but the FMC is unresponsive. The LEGS page in the FMC won't accept any data entry.

3 hours ago, aniiran said:

You can be at 4000 if you want its 16NM out. you just have to be ready to hit the CMD B/APP buttons.    At 3000 is just for proof of concept to make sure it works but as I found out KSJC has no CATIII ILS and therefore no Autoland.  KSFO 28R is CATIII that's why it works there. 

It's true that KSJC 30L is only a CAT II ILS, but that doesn't affect whether you can do an autoland. CAT II affects the decision height (at least 100 feet), but AIUI many operators recommend or even require performing an autoland on a CAT II approach (with weather below CAT I minimums). See the discussion here:

https://www.pprune.org/flight-ground-ops-crewing-dispatch/474967-autoland-allowed-ils-cat-ii-rwy.html

So if the autoland isn't working, there must be some other reason. @anavsun When you say the autoland doesn't work, what exactly is it that doesn't go as expected?

Edited by martinboehme
Corrected "31L" to "30L"

  • Author
1 minute ago, martinboehme said:

It's true that KSJC 31L is only a CAT II ILS, but that doesn't affect whether you can do an autoland. CAT II affects the decision height (at least 100 feet), but AIUI many operators recommend or even require performing an autoland on a CAT II approach (with weather below CAT I minimums). See the discussion here:

https://www.pprune.org/flight-ground-ops-crewing-dispatch/474967-autoland-allowed-ils-cat-ii-rwy.html

So if the autoland isn't working, there must be some other reason. @anavsun When you say the autoland doesn't work, what exactly is it that doesn't go as expected?

I tried landing several times on 30L using the route from KSFO to KSJC ILS 30L. The aircraft is too high and too fast when it arrives at the threshold of 30L.

The best I could do is shown below. I have no idea what I did. So of course I can'r repeat it. I thought I just got lucky.

The question marks in the picture below are there because I don't know if they should be as shown. They are probably errors and it doesn't make sense to me and I just don't have enough experience flying the 737.  For instance, on the FMA I was expecting to see VOR/LOC and not LNAV. The Course headings should be 306 and not 255. I thought the VORLOC and APP buttons should be green. CMD-B should be green also. I thought that these are probably because of what @aniiran mentiond ie. 30L is not a cat III ILS.  My bet is that these are all user errors (mine).
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