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  #11  
Old 04-21-2005, 11:52 AM
Sam Buchanan's Avatar
Sam Buchanan Sam Buchanan is offline
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Join Date: Dec 2004
Location: North Alabama
Posts: 4,351
Default Pictorial ADI unit

Quote:
At Sun 'N Fun, I saw TruTrak's soon to be released "ADI" box. My understanding it's basically a Pictorial Pilot with pitch added. In otherwords, dual axis. Price was about $2,700. Since the Pictorial Pilot is about $2,000, you would pay about $700 for the second axis.

The instrument looks just like the Pictorial Pilot, only has the pitch in addition to roll. Replaces or backs up an attitude gyro.

Sorta. My understanding of the ADI box is that "pitch" info is actually derived from VSI pitot data, not actual aircraft attitude. So the unit indicates "pitch up" when the VSI senses an increase in altitude, not necessarily an actual change in aircraft pitch.

This would probably be better than no "pitch" info, but since I haven't flown the unit or talked to anyone who has, I am not sure how well it actually replaces an attitude indicator.

In my opinion, the best backup for an AI/EFIS in an electric panel is an autopilot with altitude hold and the determination and knowledge to use it when things get dicey.

Sam Buchanan
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