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One dot off course on RNAV Approach with GFC500
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ricardo View Drop Down
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Joined: 17 Jan 2022
Location: Seattle, wa
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Points: 134 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ricardo Quote  Post ReplyReply Direct Link To This Post Topic: One dot off course on RNAV Approach with GFC500
    Posted: 22 Apr 2023 at 1:45am
Flew an RNAV approach today to mins for practice (RNAV 20 at KPWT).

At mins the AP had flow one dot off course. (left of course).

Avionics on airplane is GFC500, Dual G5’s (8.02 firmware) and IFD 440 (10.3.0.2 firmware).

This is a relatively new installation, and I’ve flown a handful of approaches to mins with the setup, and this is the first time i’ve seen it do this.

Day was not windy, and when i hand flew the next approach i had no issues keeping the guidance centered.

Curious if this is something that others have seen and whether this sort of error would be a navigator fault (IFD) or something else.


Edited by ricardo - 22 Apr 2023 at 1:46am
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Victor View Drop Down
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Joined: 03 Feb 2012
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Points: 61 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Victor Quote  Post ReplyReply Direct Link To This Post Posted: 22 Apr 2023 at 1:59am
Originally posted by ricardo ricardo wrote:

Flew an RNAV approach today to mins for practice (RNAV 20 at KPWT).

At mins the AP had flow one dot off course. (left of course).

Avionics on airplane is GFC500, Dual G5’s (8.02 firmware) and IFD 440 (10.3.0.2 firmware).

This is a relatively new installation, and I’ve flown a handful of approaches to mins with the setup, and this is the first time i’ve seen it do this.

Day was not windy, and when i hand flew the next approach i had no issues keeping the guidance centered.

Curious if this is something that others have seen and whether this sort of error would be a navigator fault (IFD) or something else.

I see exactly the same, except I have a G3X and 10.3.1.2.


Edited by Victor - 22 Apr 2023 at 2:05am
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