Replacing back-up Attitude Indicator

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Charles
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Re: Replacing back-up Attitude Indicator

Post by Charles »

rwtucker wrote:I think you can also get the RC Allen with a Slip/Skid indicator.
Yep, it's a ball in a curved tube that's affixed to the instrument just below the display. Similar to the ball in a traditional turn coordinator. It's about $150 extra.

The low tech aspect of this indicator contrasts with the high tech display, to say the least. I wonder how complicated it would have been to add it in the software and display it on the screen instead...
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Re: Replacing back-up Attitude Indicator

Post by rwtucker »

I wonder if we could get an STC for this? Many more features and a simple AI and $1,425. Panel conversion looks easy.

http://www.dynonavionics.com/docs/D1_intro.html
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Re: Replacing back-up Attitude Indicator

Post by gsontheimer »

It is not designed for it. I would rather get a STC for this:

http://www.aspenavionics.com/products/e ... up-display
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Re: Replacing back-up Attitude Indicator

Post by carym »

gsontheimer wrote:It is not designed for it. I would rather get a STC for this:

http://www.aspenavionics.com/products/e ... up-display
Since the Aspen backup product already is FAA TSO'd, it may be possible to have it installed under a 337 rather than seeking an STC. On page 9 of the PDF it states what is required to change or add navigation equipment via Form 337.

http://rgl.faa.gov/REGULATORY_AND_GUIDA ... _13-2B.pdf
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Re: Replacing back-up Attitude Indicator

Post by rwtucker »

What is the price of the smaller Aspen? Are they are a "dealer only" product. This has positives and negatives.
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Re: Replacing back-up Attitude Indicator

Post by gsontheimer »

This is the official Aspen position:

"The EBD was designed as a OEM product, Piper is using it and another airframe manufacturer has an active project to approve it in their airframe.

Unfortunately, there are no active STC projects to install the EBD in a Diamond DA40. It is possible that one of the certification shops here in the US will take on a project like this but, Aspen is not pursuing an installation approval for the EBD at this time."

Aspen Pricelist:

Evolution Backup Display
Basic (Portrait or Landscape) $6,995
Advanced (Portrait or Landscape) $10,995

As the Backup Gyro is required for IFR flight, I am wondering, whether a form 337 change would suffice to replace the backup instruments with the Aspen Backup Display, although it would be much more reliable (solid state) and provide more functions.
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Re: Replacing back-up Attitude Indicator

Post by cbrinton »

rwtucker wrote:You guys who have replaced the backup AI. How many hours?

Marc, I think you can also get the RC Allen with a Slip/Skid indicator. I'm going solid state when the time comes.

Mine only lasted about 350 hours before needing to be replaced. Not very good in my book.
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Re: Replacing back-up Attitude Indicator

Post by rwtucker »

I have heard other reports of early failure for this model. I keep mine shut off and caged (homemade) for daytime VFR.
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Re: Replacing back-up Attitude Indicator

Post by rwtucker »

carym wrote:
gsontheimer wrote:It is not designed for it. I would rather get a STC for this:
http://www.aspenavionics.com/products/e ... up-display
Since the Aspen backup product already is FAA TSO'd, it may be possible to have it installed under a 337 rather than seeking an STC. On page 9 of the PDF it states what is required to change or add navigation equipment via Form 337. http://rgl.faa.gov/REGULATORY_AND_GUIDA ... _13-2B.pdf
Am I reading the 337 wrong when it says, "Stand-alone installations do not depend on other systems or
complex interfaces to function" (page 9). Doesn't the Aspen depend on external systems and have complex interfaces? Specs say: I/O Specifications: ARINC 429 Inputs: 5 Low Speed, ARINC 429 Outputs: 1 Low Speed, RS-232 Inputs: 5, RS-232 Outputs: 3, Pitot/Static: Quick Connect.

Also, I can't see where the Aspen would fit without a major rework of the DA-40 panel. I still think the Dynon would add a little functionality to the original A/I for $1,500 (for version 2), might squeeze into the panel, and looks like it conforms to the 337 wording.
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Re: Replacing back-up Attitude Indicator

Post by Tommy »

Just had my standby attitude indicator fail at around 980 hrs. Is there an out of the box replacement other than the oem that is legal and doesn't require a 337 or any other paper work?
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