Hey all,

 

I was wondering what is the proper procedure for getting out of ILS for lets say offset LOC approaches and such. Should I disconnect the AP or just the FDs?

 

Yesterday I was training the Innsbruck 08 circling and in Ryan's manual he disconnects the AP just before the last turn. Now, at 3700 feet you need to alt hold and HDG 230. I tried with FDs off but the plane kept the ILS. I managed to do it by disconnecting the AP, then switching off the FDs and then switched all on again but I was thinking that may not be the right procedure. In the manual this is not explained.

 

Anyone wanna chime in?

 

cheers

Ignat

Hey Ignat.

 

Have you read the Tutorial #2? The best way to practice this one is to load Ryan's saved flight, "Before Visual Approach".

 

Before turning onto your 230 deg. heading, you should not be established on any ils. You should have LNAV engaged and have 230 deg. set in your MCP, then just before the ABSAM NDB you hit HDG SEL.

 

If you check out page 118 of the tutorial, it will take you from there.

 

Regards,

In the manual this is not explained.

 

This explained in FCOM vol2. 4.10.16.

Hey Ignat.

 

Have you read the Tutorial #2? The best way to practice this one is to load Ryan's saved flight, "Before Visual Approach".

 

Before turning onto your 230 deg. heading, you should not be established on any ils. You should have LNAV engaged and have 230 deg. set in your MCP, then just before the ABSAM NDB you hit HDG SEL.

 

If you check out page 118 of the tutorial, it will take you from there.

 

Regards,

 

 

yes, I have done the tutorial step by step (or at least everything after RTT . I was under impression that Ryan flies it in VNAV / LNAV down to ABSAM since he puts speed restrictions for OEV18 which is after the VOR LOC CAP and GS CAP (at OEV21). He also says hdg sel @ ABSAM but noting is mentioned how he gets out of ILS mode. As I mentioned (you can see this in the tutorial), he disconnect the AP just before the last turn to RWY08.

 

Just before passing AB, press HDG SEL. Pressing it just slightly

beforehand accounts for the turn radius and should put us right

on the 230 degree radial outbound from it.

We level out at 3700 feet about halfway to the Innsbruck NBD (INN).

 

Quote straight from the tutorial. When HDG SEL is pressed, nothing happens. Also, the plane does not level out at 3700. She continues along the GS.

 

 

This explained in FCOM vol2. 4.10.16.

 

Spot on, thanks. Although I must've meant "tutorial" rather than "manual"

Also I realise now that there are two sides to my question:

1. Which buttons you press to get out of the ILS

2. How this particular approach is properly flown

If I've understood it correctly, you don't "get out" of an ILS, the only way to do that is by TO/GA, since the only way you're supposed to leave an ILS approach is to go around.

 

IIRC for LOWI you don't want to follow a glidslope, join the LOC course using VOR/LOC, then descend along the path using VNAV/VS or what you prefer, just make sure you don't bust the altitudes.

 

Once at the turn point, you simply exit VOR/LOC by going back to heading SEL.

 

At least of the top of my head that's how it works...

Ignat.

 

As i said before,my advice is to take time and carefully read the Tuorial # 2. If you follow it to the letter and read the first pinned thread in this forum titled "Tutorial #2 page 118 missing step", things work out just right.

 

Trust me, i have been flying this beautiful bird for over a year but i am nowhere near as proficient at this as a lot of folks on this forum, yet i can fly this approach right to the ramp, Because i followed the tutorial and loaded the saved flight i mentioned in my first post, over and over.

 

Regards,

If I've understood it correctly, you don't "get out" of an ILS, the only way to do that is by TO/GA

 

Hi Johan.

 

I don't think that is exactly correct because on many occasions i use the LOC to line up for final. i.e. i actually am established on an ILS approach and then some time on that final approach, i just disconnect AP & AT and land manually, using my throttles to maintain glide slope.

 

Regards,

Hi Johan.

 

I don't think that is exactly correct because on many occasions i use the LOC to line up for final. i.e. i actually am established on an ILS approach and then some time on that final approach, i just disconnect AP & AT and land manually, using my throttles to maintain glide slope.

 

Regards,

 

But then you haven't left approach mode.

 

If you look at your FMA you will notice they don't change when disconnecting the AP & AT, in fact they will stay in approach mode until you press TO/GA or disconnect the Flight Directors.

 

At least that's how I've understood it.

But then you haven't left approach mode.

 

If you look at your FMA you will notice they don't change when disconnecting the AP & AT, in fact they will stay in approach mode until you press TO/GA or disconnect the Flight Directors.

 

At least that's how I've understood it.

 

I see what you are saying. What i assumed was originally being implied was, that the only way out of an ILS approach and to manually control the remainder of the approach was to switch off and back on, your FDs.

You can also get out of approach mode by selecting a VOR frequency on both NAV radios.