PBN

Question 1

Performance based navigation

Answer 1

Navigation that uses GNSS and onboard systems to achieve high levels of track and heigh keeping accuracy

Question 2

NAVIGATION SPECIFICATION

Answer 2

RNP = RNAV + onboard performance monitoring and alerting system

RNP AR = RNP + Curved path with RNP value < 0.3Nm

Question 3

RNP VALUES

Answer 3

RNP or RNAV specifications are established according to the lateral navigation accuracy required

RNP X has an accuracy > X nm 95% of the time

Airbus computes EPE
If EPE > RNP = accuracy low
If EPE < RNP = accuracy high

Question 4

RAIM

Answer 4

Receiver Autonomous Integrity Monitoring :

Provides integrity and warning

• at least 6 satellites for fault detection and exclusion
• at least 5 satellites for fault detection
• Less than 5 satellites is not supported

Question 5

Navigation performance

Answer 5

LAT : A corridor of 2x RNP value provides lateral obstacle clearance either side of trajectory

Operational limit is 1x RNP value
-> call LAT-DEV when deviation exceeds 1/2 dot

VERT : call V-DEV when deviation exceeds 1/2 dot (50ft)