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777 IRS (Read 64 times)
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Joined: Sep 3rd, 2021
777 IRS
Sep 3rd, 2021 at 4:44am
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So when I load up the 777, this is what I see.
Can anyone help me understand how to align the IRS so I can have some nav abilities?

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CS Team

Posts: 12052
Location: Victoria, Australia
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Re: 777 IRS
Reply #1 - Sep 4th, 2021 at 2:06am
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Turn the ADIRU off, wait a few seconds, then turn it back on.

Using the attached image as a guide, on the POS INIT page of the CDU, a series of empty blocks should appear (orange square) next to LSK5R (yellow square).
To allign, click on LSK4R (green square), to "copy" the coordinates there (the co-odinates should appear on the scratchpad (blue square)), then click on LSK5R to "paste" the co-ordinates into the blank blocks. After a few minutes it should align.
As a general rule, do not start the engines, or move the 777 until after the ADIRU is aligned.

Note. Alignment will take a few minutes unless you go to CDU > MENU > SETUP > Click on LSK4L beside FAST ALIGN, which will immediately align the ADIRU. Wink

777_Alignment.jpg ( 299 KB | 6 Downloads )

Mark Fletcher

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