REFLECTOR: FW: GPS for IFR

[David Staten]

You can use a Non IFR GPS to help maintain situational awareness.

Like.. you have a VOR, ILS and NDB in your plane, and a handheld GPS.

With a non-IFR GPS
You cannot file /G.
You cannot accept GPS approach clearances.
You cannot LEGALLY use the GPS device in lieu of the primary equipment - 
i.e. it must be working, not disabled.
You cannot LEGALLY use the GPS device in lieu of DME if the DME is 
required equipment for the approach you are cleared on.

You CAN use the non IFR GPS to help keep you heading towards the NDB, on 
the approach centerline, navigating over fixes, markers and whatever 
else while you use the VOR, ILS, NDB etc as your "primary means of 
navigation"

An IFR GPS automatically increases the sensitivity of the display from 1 
mile = 1 dot in non approach airspace to 1 dot = 0.3 miles in the 
terminal end of the approach. Any gps can be adjusted, but the IFR ones 
do this as you progress down the approach

You must have an annunciator or GPS display on or near the centerline of 
your field of view (in the 6 pack, essentially) that indicates whether 
GPS is armed or in approach mode, and the database must be up to date.

I may have missed something because I'm running off memory here, but was 
at one point assisting with Chris Barber's build, and had acquired a 
King KNS 89B IFR capable GPS and had obtained the hardware to make it an 
IFR legal and capable installation..


aminetech at bluefrog.com wrote:
> That's very helpful.  I'll have to check the centerline distance.  I 
> understand my plane is IFR approved for VOR.  If my GPS is not 
> approved, can I fly IFR with it, or only if the VOR is not working?  
> I'm looking for the meaning of "additional source".
>  
> John
>
> --- ljepstein at hotmail.com wrote:
>
> From: lawrence epstein <ljepstein at hotmail.com>
> To: Reflector Reflector <reflector at tvbf.org>
> Subject: REFLECTOR: FW: GPS for IFR
> Date: Mon, 16 Feb 2009 22:51:31 +0000
>
> I forgot, it must have an up to date database.
>
> Btw: you can use any GPS (even a handheld with an old database) as an 
> "additional source" of Nav. Info, as long as you have IFR approved 
> Nav. equipment as your "primary source of navigation)
>
> ------------------------------------------------------------------------
> From: ljepstein at hotmail.com
> To: reflector at tvbf.org
> Subject: RE: REFLECTOR: GPS for IFR
> Date: Mon, 16 Feb 2009 22:47:25 +0000
>
> GPS must be TSO'ed for IFR enroute, approach +/or WAAS. The box itself 
> must be an approved box and the installation must meet certain specs 
> to use it IFR (eg; CNX 480 display has to be no more than 13.4" (I 
> think that is the number) from the "centerline" (center in front of 
> the pilot) or a remote annunciator has to be added in that space (for 
> WAAS approaches).
>
> Larry Epstein
>
> ------------------------------------------------------------------------
> Date: Mon, 16 Feb 2009 14:38:34 -0800
> From: aminetech at bluefrog.com
> To: reflector at tvbf.org
> Subject: REFLECTOR: GPS for IFR
>
> My plane came with an Apollo GPS and I was told that it was not 
> suitable for IFR.  Someone recently told me that any GPS can be made 
> suitable for IFR.  If so, I'd like to know how as I'm working on my 
> IFR ticket.
>  
> John
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