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Posted

Flight manual page 326~327 there is INS performance rating

 

in that manual INS performance rating number show 10

 

but i always get this number... 1

 

so this mean ... my INS data is inaccurate?

 

my WCMD always missed target

 

any suggestion?

Posted

Is this shown at the lower-left of the TGP display?

 

Are you waiting for your EGI to become aligned before switching to nav mode during startup? It will take 4 minutes, and INS NAV READY will begin to blink on the CDU (the text will appear before then to indicate it's marginally aligned, it starts blinking once fully aligned).

Posted

yes that's it ... the number at the lower-left of the TGP

Q : Are you waiting for your EGI to become aligned before switching to nav mode during startup?

A : yes i always take 4 minutes to get fully Aligned

i don't have an idea this is normal .... how about you?

Posted

Can you make a screenshot? According to the manual the value shown on the TGP is a static field. I looked it up for this thread not long ago. I haven't tried switching on the TGP before the EGI to see what happens if it's not aligned or if it changes at all.

Posted

Yep I'd say you're right. Just did the instant action and it definitely says '1' now. Screenshot on page 326 of the manual still shows 10, although if you're reading the manual you'll know it's just a static field anyway and not worry about it. :)

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