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RNP limit exceeds


Danoo
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Hello friends, while flying on INS LTN-92 (which updates its position through GPS) after 15 minutes of flight, aircraft ANP exceeds limit of RNP in cruise. What may be the probable causes??? Why system generates so much drift in just 15 minutes??

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ANP (Actual Navigation Performance) & RNP (Required Navigation Performance) terms are related to Flight Management System which ensures you are flying in authorized corridor. When INS is providing navigation data to FMS it gets out of limit after 15 minutes of flight.

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  • 3 weeks later...

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