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B777 ILS auto-tune

 
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thomas747400



Joined: 14 Feb 2016
Posts: 88
Location: Perth, Western Australia

PostPosted: Sun Mar 03, 2019 10:29 pm    Post subject: B777 ILS auto-tune Reply with quote

Hi,

I have situations where I select an approach but the ILS does not auto-tune. This only happens if an approach ends up in vectors or if there is a route discontinuity. Once the discontinuity or vector has been removed or a direct route to the IAF/IF has been entered in the legs page, the ILS auto-tunes.

For Example:
CYUL (Montreal) IMPACT 1 arrival for ILS 24L
The ILS will not auto-tune on downwind as this STAR ends up in vectors.
As soon as I clear the route discontinuity (Vectors) and select DCT SLOKA (IF), the ILS tunes automatically to 110.5/237.

Is this normal?

Thomas
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MarkHastings



Joined: 18 Jan 2006
Posts: 881
Location: UK

PostPosted: Mon Mar 04, 2019 6:25 pm    Post subject: Reply with quote

The ILS Tuning is not dependent on the route LEGS...

However the ILS will only start to try and tune after reaching half distance or within 150nm, so off the top of my head the first thing I will check is how the vector is affecting this calculation.

Which version are you running ?
Please ensure its a recent version as it may have already been corrected.

I'll try your example and see what happens.
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Mark Hastings
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MarkHastings



Joined: 18 Jan 2006
Posts: 881
Location: UK

PostPosted: Mon Mar 04, 2019 6:36 pm    Post subject: Reply with quote

I've just done a quick check in 1.94 and that STAR including the Vector appear to work ok.
I'll keep an eye on it and try some more tests.
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Mark Hastings
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thomas747400



Joined: 14 Feb 2016
Posts: 88
Location: Perth, Western Australia

PostPosted: Thu Mar 07, 2019 7:50 am    Post subject: Reply with quote

Hi Mark,

I am now running V1.4, I am still getting the same error:

Approach into Stockholm Arlanda ESSA

STAR: NILUG 2P (vectors after ERK)
RWY: 19L

The ILS remained in PARK, no auto-tuning. When I was on downwind (12 DME to ESSA), I removed the route discontinuity between ERK and the first waypoint on the ILS and the ILS auto-tuned instantly.


I can send through a video if that helps.


Thomas
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MarkHastings



Joined: 18 Jan 2006
Posts: 881
Location: UK

PostPosted: Thu Mar 07, 2019 8:38 am    Post subject: Reply with quote

yes, please email me a video so I can replicate it.
Thanks
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Mark Hastings
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