Performance Based Navigation

Question 2

Which statement defines Required Navigation Performance (RNP)?

Answer 2

RNP is the accuracy standard to which an aircraft must adhere while navigating through a specific airspace, or to fly a specific procedure.

Question 3

When RNP is set to 10.0:

Answer 3

The aircraft must have sufficient nav accuracy to remain within 10 miles of the desired route or position with 95 percent certainty.

Question 4

Actual Navigation Performance (ANP) is a measurement of what?

Answer 4

ANP is measurement of lateral and/or vertical navigation accuracy by the FMC.

Question 5

On the PDF Nav Performance Scales, the white end scale markings symbolize the current set of RNP values. T/F

Answer 5

True

Question 6

If lateral ANP increases to the RNP value or greater, the flight crew would receive these alerts:

Answer 6

The FMC alerting message “UNABLE REQ’D NAV PERF - RNP” would appear in the CDU scratchpad, and the ANP bars on the lateral nav performance scale would merge and turn amber.