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GPS CDI (was: EFIS Comparisons)

 
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brian



Joined: 02 Jan 2006
Posts: 643
Location: Sacramento, California, USA

PostPosted: Sat Jan 14, 2006 11:03 pm    Post subject: GPS CDI (was: EFIS Comparisons) Reply with quote

BobsV35B(at)aol.com wrote:

Quote:
Good Morning Bob,

Do you intend to use the 430 IFR or VFR?

Do you want to execute full ILS approaches?

A set of ILS needles is required for this. This does not need to be a
TSO display tho. You do not need TSO on any of the avionics except for
the IFR-certified GPS.

Quote:
For VFR, there is no question that a CDI is not needed.

For IFR, things get a bit stickier. Beyond that, it makes a difference if
the aircraft is experimental or normal category.

As I interpret TSO-129.whatever (for IFR GPS), the doc states that there
must be a CDI in the normal visual scan of the pilot. I would consider
the CDI display on the unit when mounted in a center-stack for radios to
be within the pilot's normal visual scan. This therefore does not
require a separate CDI.

OTOH, some inspectors at the FSDO did insist on one. I don't think that
TSO for it is required so something like the BM EFIS-1 should suffice.
Again, my interpretation.

Also, as I recall, didn't they change the requirements for installing an
IFR GPS such that it no longer requires a sign-off by and inspector at
the FSDO?

--
Brian Lloyd 2243 Cattle Dr.
brian-yak at lloyd dot com Folsom, CA 95630
+1.916.367.2131 (voice) +1.270.912.0788 (fax)

I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery


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Brian Lloyd
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+1.916.367.2131 (voice) +1.270.912.0788 (fax)

I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery
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PostPosted: Sun Jan 15, 2006 8:36 pm    Post subject: GPS CDI (was: EFIS Comparisons) Reply with quote

The BM EFIS-1 has a CDI display built into it, therefore a second one is
not required.

Mike
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