INS OPERATION

Question 1

1 An aircraft equipped with an Inertial Navigation system (INS) flies with INS 1 coupled with autopilot 1. Both inertial navigation systems are navigating from waypoint A to B. The inertial systems’ CDU s show:
XTK on INS 1 = 0 XTK on INS 2 = 8L
From this information it can be deduced that:

Answer 1

c. at least one of the inertial navigation systems is drifting

Question 2

2 When is the last point at which an INS may be selected to NAV mode?

Answer 2

b. Immediately prior to push back or taxy from the gate

Question 3

3 ATT REF mode of the Inertial Navigation System (INS) is a back-up mode providing:

Answer 3

d. only attitude and heading information

Question 4

4 What method of entering waypoints can be used on all INS equipments?

Answer 4

d. Latitude and longitude

Question 5

5 The purpose of the TAS input, from the air data computer, to the Inertial Navigation System is for

Answer 5

b. the calculation of wind velocity

Question 6

6 Alignment of INS and IRS equipments can take place in which of the following modes?

Answer 6

b. NAV and ALIGN

Question 7

7 Which mode on the CDU of an INS must be selected in order to display initial Great Circle track between 2 waypoints?

Answer 7

c. DSRTK \ STS

Question 8

8 A pilot accidently turns OFF the INS in flight, and then turns it back on a few moments later. Following this incident

Answer 8

c. it can only be used for attitude reference.

Question 9

10 What is the input to an INS which allows it to compute W/V?

Answer 9

TAS