What's wrong with this picture?

[Joe Larussa]

I'm new to this whole digital AI business but does this look right to you?

 

 

Edited October 26, 2016 by Joe Larussa
Video link

[Joe Larussa]

Looks like I need a different format for the video.

[carusoam]

See if you can use YouTube...

A lot of videos get posted that way.

Best regards,

-a-

[Hank]

I don't have anything digital other than OAT, but that looks right to me. Turning to the left by the Turn Coordinator, the AI shows the left side small and the right side big. Looking out the windshield in a left bank, the horizon is closer to the top on the left side and closer to the bottom in the right side. What would your old AI show? Same same.

It looked funny to me at first (maybe because you suggested there's a problem), then I thought about it and ignored all the little symbols on it and it's right. The Climb/Descend bars are hard to read against the "ground" but show up well against the "sky" part; hopefully his is a video artifact not seen in the cockpit.

The video played just fine on my iPad, don't know what problems others may be having . . .

[cbarry]

I don't believe a negative pitch attitude should be indicated in a level and then slightly climbing turn.  At least this sight picture is not what a traditional AI indicates.

[Brandontwalker]

  On 10/26/2016 at 11:38 AM, cbarry said:

I don't believe a negative pitch attitude should be indicated in a level and then slightly climbing turn.  At least this sight picture is not what a traditional AI indicates.

My thought exactly. The negative pitch at the end definitely was not supported by the altimeter or airspeed indicator.


Sent from my iPhone using Tapatalk

[David Mazer]

  On 10/26/2016 at 12:02 PM, Brandontwalker said:

My thought exactly. The negative pitch at the end definitely was not supported by the altimeter or airspeed indicator.


Sent from my iPhone using Tapatalk

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Me too.  This started out okay but at the end really didn't make sense.  I think you should get it looked at before entering IMC.

[Tony Armour]

  On 10/26/2016 at 12:36 PM, David Mazer said:

Me too.  This started out okay but at the end really didn't make sense.  I think you should get it looked at before entering IMC.

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Yep, weird.

[Joe Larussa]

What I'm seen is a left turn that by altimeter and altitude tape indicates level flight but the AI shows roughly 8 degrees pitch down. Not in the video but it generally seems slow to come back to straight and level. The Garmin app on my IPhone was more accurate.

[carusoam]

Static info is known to lag.  (Vertical speed and altimeter.)

But, attitude should be right on the money...

If that were a mechanical indicator, it looked like it was suffering from parallax.  Adjusting the cross-hairs on the indicator to match the pilot's eye height would work...

Looks like a calibration or installation detail may be off.  

Share your video with the installer.  Let us know what he says...

PP ideas only, not a CFI.

Best regards,

-a-

[ArtVandelay]

Is there a initialize sequence it has to do, I vaguely remember some need a minute or two to initialize and you can't move the plane till completed? If not I would try powering off, on using the circuit breaker to see if it returns to normal.

[Chris from PA]

I put a Sandia in my panel in August and it drifted around much worse than that. I took it back to the avionics shop and asked them to replace it. I've had the new one in for over 20 hours and 7 or 8 flights. It works as expected.  Mine is adjusted to show level on the ground which shows me a couple degrees nose low in flight. You can ask the installer to adjust the pitch if you want.

[carusoam]

CfP brings up a really good point.  Level on the ground is not necessarily level in flight for most Mooneys.

there is a level line that is used to level the plane, essentially a seam running down the tail cone.

So, if the instrument installer is calibrating the instrument based on the plane sitting on the ground, make sure he has accounted for what the plane thinks level is in flight.

For an example, The Long Body points skyward at 4° or so.  (Somebody mentioned this the other day)

Best regards,

-a-

[jetdriven]

Mid bodies are around 2-3 degrees ANU on the ground 

[Marauder]

  On 10/26/2016 at 1:33 PM, Joe Larussa said:

What I'm seen is a left turn that by altimeter and altitude tape indicates level flight but the AI shows roughly 8 degrees pitch down. Not in the video but it generally seems slow to come back to straight and level. The Garmin app on my IPhone was more accurate.

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It doesn't look right to me. This video shows an Aspen electronic display in my Mooney. At around 3:35 you can see straight and level, 8:45 a turn and a little later a descent at 500 FPM.

 

[carusoam]

M,

 

Great presentation.  Something the usual web sites are unable to cover.

Your going to need a good Apple Watch to go with that.   

Best regards,

-a-

[thinwing]

Pretty sure the install manual for the AI has a section for calibrating angle of panel while leveled.The proper procedure during install is to jack aircraft up to level (as shown by a carpenters level layed across two screws directly above pilots side avionics hatch.Installer probably set AI level while aircraft on ground at positive angle.Thus level flight shows negative angle while in level flight.....

[FoxMike]

I calibrated mine while flying but I had the KI 256 as a reference.  An hour or so of putting the plane on jacks and leveling it will fix the problem.  Someone commented about the floating Artificial Horizon.  The fix for that is software package 1.6.  You have to exchange the unit.  These units work just fine once you get the bugs out.