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Old March 30th 09, 07:15 AM posted to rec.aviation.ifr
A Guy Called Tyketto
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Default KPAE ILS...Now Requires DME...Why?

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blackboxman wrote:
On Mar 29, 7:29?pm, "Steven P. McNicoll"
wrote:
wrote:

Looks like you need DME to identify the FAF if you're flying LOC
only.


There's a marker beacon there.

Yeah, that's what's got me wondering -- there is a marker beacon, so
why the DME requirement? This approach didn't require DME when the
RITTS compass locator was there (I guess it's been or being
decommissioned). AIM 1-1-9 doesn't say that an ILS has to have both a
marker beacon AND DME or a compass locator.


Here's a question. If you lose the glideslope, or it goes OTS,
you would now need something to tell you the distance for the LOC,
right? And another question; it says that simultaneous reception of
I-PAE and PAE DME are required. If you lose one or the other (or if one
goes OTS), wouldn't that nix using the approach altogether?

BL.
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