737 Flight Crew Operations Manual
Flight Management, Navigation -
Flight Management System
Operation
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 11.31.7
Actual Navigation Performance (ANP)
Actual navigation performance (ANP) is the FMC’s estimate of the quality of its
position determination. It is shown on POS SHIFT page 3/3 and on RTE LEGS
pages. ANP represents the estimated maximum position error with 95%
probability. That is, the FMC is 95% certain that the airplane’s actual position lies
within a circle with a radius of the ANP value around the FMC position. The lower
the ANP value, the more confident the FMC is of its position estimate.
September 15, 2016
To Next Page
Loading...
