ILS Jeppesen.
Thread Starter
Joined: Apr 2006
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From: Gods Country
ILS Jeppesen.
There used to be a good diagram in the Jeppesen Manuals depicting the range and the number of degrees either side of the LLZ that you could expect to receive accurate ILS signals. It appears this has been removed. Would anybody have a copy of that diagram? if so, could you please post it to me.
Thanks,
BE.
Thanks,
BE.
Joined: Oct 2000
Posts: 436
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From: N. Europe
It's a bit of a mess these days as the required service volumes have been changed from what they used to be - and not in the same way across the board. In the US, they have introduced smaller service volumes in order to cater for the number of installations which can be present in a given area. In other places, the clearance sector has been reduced or even removed alltogether (I think this became reality but am not 100% certain) as the precision of the means to becoming established on the LLZ has increased.
That's probably the answer to why it is no longer in Jeppesen.
I do not have the picture in a digital format, but it used to be 25 nm within 10 degrees off the course line and 17 nm within 35 degrees.
I think the new US specification is for 10 nm in the clearance sector. Can't recall the range requirement for the +/- 10 degrees sector.
Should give you more to google on if it doesn't help in any other way.
Cheers,
/Fred
That's probably the answer to why it is no longer in Jeppesen.
I do not have the picture in a digital format, but it used to be 25 nm within 10 degrees off the course line and 17 nm within 35 degrees.
I think the new US specification is for 10 nm in the clearance sector. Can't recall the range requirement for the +/- 10 degrees sector.
Should give you more to google on if it doesn't help in any other way.
Cheers,
/Fred
Joined: Aug 2000
Posts: 1,695
Likes: 1
From: Egcc
This any use? http://www.hkatc.gov.hk/HK_AIP/aic/AIC%2004-06.pdf
It would appear to come from ICAO Annex 10 Vol 1....which incidentally you can buy from ICAO publications for the pittance that is $1200, but of course you would get to read all the other Annexies (?) all year long for that fee. My, how the cold winter would pass so quickly.....
PP
It would appear to come from ICAO Annex 10 Vol 1....which incidentally you can buy from ICAO publications for the pittance that is $1200, but of course you would get to read all the other Annexies (?) all year long for that fee. My, how the cold winter would pass so quickly.....
PP
Last edited by Pilot Pete; 4th March 2008 at 09:08.
Joined: Sep 2005
Posts: 58
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From: Denmark
ICAO Annexes
PP,
Here you can read all the ICAO annexes for free:
http://dcaa.slv.dk: 8000/icaodocs/
It's the Danish CAA, who provides this service.
Martin
Here you can read all the ICAO annexes for free:
http://dcaa.slv.dk: 8000/icaodocs/
It's the Danish CAA, who provides this service.
Martin
Wunderbra
Joined: Aug 2006
Posts: 313
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From: Bedford, UK
Ah great link Coldbear! 
The "10 degrees either side of the centre line within 25NM and 35 degrees within 17NM" is what we learnt for the ATPL exams, though I guess this can be varied by individual authorities although my understanding is that they can only make it MORE restrictive, never less so.
The "10 degrees either side of the centre line within 25NM and 35 degrees within 17NM" is what we learnt for the ATPL exams, though I guess this can be varied by individual authorities although my understanding is that they can only make it MORE restrictive, never less so.
