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18 Jan 2018, 04:28 [ UTC - 5; DST ]


Greenwich AeroGroup



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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 12 Dec 2017, 23:52 
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Tom,

Ive added a G5 as a backup AI for a G500 setup. It was approved by the FSDo as a minor alteration as I recall. Ill dig out the paper work tomorrow. We did not need a 337.

I love the setup. picture to follow when i dig that out too


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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 12 Dec 2017, 23:55 
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Username Protected wrote:
Tom,

Ive added a G5 as a backup AI for a G500 setup. It was approved by the FSDo as a minor alteration as I recall. Ill dig out the paper work tomorrow. We did not need a 337.

I love the setup. picture to follow when i dig that out too

look at page 3 of viewtopic.php?f=2&t=73602&start=30

lost 40 lbs in old avionics and wiring. No change in CG. eliminated primary and backup vacs, both of which had failed on me in IMC previously.


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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 00:25 
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Username Protected wrote:
Tom, Ive added a G5 as a backup AI for a G500 setup. It was approved by the FSDo as a minor alteration as I recall. Ill dig out the paper work tomorrow. We did not need a 337. I love the setup. picture to follow when i dig that out too


If you have paperwork from the FSDO you are good to go, but that is not a minor.


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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 07:19 
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Username Protected wrote:
If you have paperwork from the FSDO you are good to go, but that is not a minor.


If it were a minor you would not need any paperwork from the FSDO.

I'm surprised you could even get FSDO approval on a 337 for this (not that anyone ever really looks at them until something bad happens), given that the STC on the Non-TSO'd G5 does not allow its use as a backup AI.

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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 09:09 
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Username Protected wrote:
If it were a minor you would not need any paperwork from the FSDO.


Something on paper saying they consider it a minor.


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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 11:42 
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Username Protected wrote:
If it were a minor you would not need any paperwork from the FSDO.


Something on paper saying they consider it a minor.



Don, can you please photocopy your install paper work and either post it or send it to me in email?

Thanks,
Tom
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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 11:48 
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I’d like to see this also. I was just informed it can’t be done, but you obviously did it. I’m in the shop now so please post info.

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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 11:53 
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Why not one of the RC Allen gyros with a battery backup?


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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 12:01 
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Ok, Beechtalk, I do math for a living. I see people talking all the time about "going electric" both to save money and weight.

I thought doing math on Beechtalk was a TOS violation? If not, it certainly should be!


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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 12:15 
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Username Protected wrote:
I’d like to see this also. I was just informed it can’t be done, but you obviously did it. I’m in the shop now so please post info.

Me too, in the shop right now. Firewall forward and being all electric a item on the list. Avionics tech working the problem.


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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 12:33 
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One said I could do it if I installed a mechanical Turn Coordinator along with the G5.

Any way to rearrange the column of "holes" on the left side of your panel.... then cut a new piece of sheet metal?

It looks to me... there is some wasted vertical spacing as it's presently laid out.
"IF"... and the big IF....if you could find room to get a turn and bank... a standard 3 1/8"... or maybe a 2 1/2" one in that column... you could then install your desired G5 in the location of the KI-256.

The lowly electric TC (T&B is better) saved my life a long time ago in my debonair partial panel... I'm kinda partial to them.

Leldon


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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 13:48 
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Haven't been home to dig through the logs. I'll post tonight.


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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 20:49 
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Username Protected wrote:
One said I could do it if I installed a mechanical Turn Coordinator along with the G5.

Any way to rearrange the column of "holes" on the left side of your panel.... then cut a new piece of sheet metal?

It looks to me... there is some wasted vertical spacing as it's presently laid out.
"IF"... and the big IF....if you could find room to get a turn and bank... a standard 3 1/8"... or maybe a 2 1/2" one in that column... you could then install your desired G5 in the location of the KI-256.

The lowly electric TC (T&B is better) saved my life a long time ago in my debonair partial panel... I'm kinda partial to them.

Leldon



Again, folks. My quest does not include any kind of mechanical spinning gyros, air or electric driven. That's my objective, and I'm not willing to compromise on it.
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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 13 Dec 2017, 23:22 
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Username Protected wrote:
Haven't been home to dig through the logs. I'll post tonight.

This is the 337 for the panel upgrade. Page 2 shows the paragraph on the G5 which refers to a minor deviation from the STC. This was cleared by the FSDO. Mine was not the first locally to have this setup approved.

Obviously, your call and your avionics tech's. I've read the back and forth in various threads on whether to use the G5 in backup. Works for me, and I am happy to get rid of the vac pumps. I've had 2 pump failures in IMC in the past. I have a backup alternator, and the G5 has its battery. Sounds like enough to me.


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 Post subject: Re: Garmin G5 as a backup Attitude Indicator
PostPosted: 14 Dec 2017, 00:11 
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Username Protected wrote:


Again, folks. My quest does not include any kind of mechanical spinning gyros, air or electric driven. That's my objective, and I'm not willing to compromise on it.


I’d think that to be tunnel vision Tom. I’m a fan of the turn coordinator and prefer that to an attitude gyro when dealing with a pilots helmet fire!
It saved my wives bacon shortly after JFK jr augered in and I cringe when it’s removed for an attitude gyro. Why? Because attitude gyros are often reverse controlled in that the pilot initial turns the wrong way, until they notice it getting worse. I’ve been there, done that, and read a report where there was as study to connect the aircrafts controls to the attitude gyro to alleviate that problem.

Also everyone remember the Y2K scare? All the hydro electric dams were going to shut down or the switching stations? If you have a Garmin G500, you want a Garmin standby?
I don’t, because the algorithms may have been from the same software designers!
Just today I heard that a civilian Hercules transport wanted to go over the 0 degrees lat and long point as they were near it, so they did, and what do you think happened?
The INS shut down! It thought they were nowhere from nowhere.

So I’m scratching my head over how many Pages of Garmin guys wanting Garmin backups there is.

Murray


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