Sender: <marv@lancaironline.net> (Marvin Kaye)
To: lml
Date: Sun, 30 Mar 2003 22:02:32 -0500
Message-ID: <redirect-2093016@logan.com>
From: StarAerospace@aol.com
Subject: Re: [LML] Substituting GPS for DME
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit

If the approach requires a DME arc or DME distance fixes and does not have an 
approved GPS or GPS/ARNAV (advanced area navigation, to be required at the 
upper FL's in 2005), you're stuck.  The FAA has started creating GPS based 
equivalent approaches to substitute for all approaches in (supposedly) the 
following priority:

1. NDB
2. VOR
3. VOR/DME
4. ILS (this will require WAAS and may still only be good for Cat 1)

IOW, if you typically fly where they clear you to a DME approach and they 
don't list a GPS equivalent, you need a DME.

If you have the panel space, a used KNS-80 can be had for ~$1000.  Yes, the 
RNAV is pretty useless by today's standards, but that's a cheap price for a 
DME/VOR/LOC/GS.

Eric Ahlstrom