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CDI deviation

Old 08-22-2017, 12:26 AM
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Default CDI deviation

Hi,

I have an question for IFR.
Which plane does not have HSI, 1 dot on CDI how many degrees it corresponds, when it moves?
Also, could you give me advice, where can i practicing IFR online, or do you know any great program for this?
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Old 08-22-2017, 04:40 AM
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Originally Posted by alexmillis View Post
Hi,

I have an question for IFR.
Which plane does not have HSI, 1 dot on CDI how many degrees it corresponds, when it moves?
Also, could you give me advice, where can i practicing IFR online, or do you know any great program for this?
Many planes don't have HSIs. Most small trainers (Cessna 150,152,172) don't usually have them.

1 dot on the CDI is 2 degrees.

I liked the Sporty's program for my IFR training.
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Old 08-22-2017, 07:05 AM
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As ski said above, each dot is 2 degrees.

I personally used this for studying IFR

http://pilotscafe.com/download/IFRQuickReviewSheets.pdf

Along with the sheppard Air IFR written practice
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Old 08-22-2017, 10:43 AM
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One Dot = 2 degrees for VOR Nav.

When/if the CDI is slaved to RNAV/GPS, each dot represents a fixed distance off centerline (the distance changes depending on mode, typically full-scale equals 0.3 NM for approach, 1.0 NM for terminal, and 5 NM enroute IIRC).
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Old 08-22-2017, 11:23 AM
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Another part of your answer is that the CDI deflection is dependent on the Localizer course width - which varies with the approach.
In that case each dot represents 75 'microamps' of the measurement zone.
Last week as an example, I had LOC widths vary between 6.00 degs at KLFK to 3.00 degs at KBAD
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Old 08-23-2017, 11:57 PM
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Thank you guys.

Ever since i found an app, which simulate perfectly the IFR.
Do you guys want to check it?:
https://itunes.apple.com/us/app/ifr-...901798935?mt=8
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