GPS, RNAV, WAAS, RAIM

Question 1

RNAV stands for

Answer 1

Area Navigation

Question 2

What does RNAV displays?

Answer 2

1) Distance and time to a waypoint or course

2) No need to ground facilities to track a course

Question 3

What does RNAV include?

Answer 3

1) VOR/DME RNAV
2) Inertial Navigation Systems
3) GPS

Question 4

What is VOR/DME RNAV?

Answer 4

1) pre-GPS RNAV
2) Finds radials and distances from VORs
3) You need to be in the coverage of VOR service

Question 5

Inertial navigation system

Answer 5

1) Uses gyros, accelerometers and navigation computers to calculate
2) Accuracy is degrades every one or two NM.
3) Needs to be calibrates

Question 6

Flight Management System

Answer 6

on-board multi-purpose navigation, performance, and aircraft operations computer designed to provide virtual data and operational ( pre-engine start and take-off, to landing and engine shut-down.)

Question 7

What does RNAV use as a new technology?

Answer 7

GPS (Global Positioning System)

Question 8

What is WAAS?

Answer 8

1) Wide Area Augmentation Syste

2) Increases the GPS accuracy

Question 9

how can you make sure that GPS is reliable?

Answer 9

check the RAIM

Question 10

RAIM stands for

Answer 10

Receiver Autonomous Integrity Monitoring

Question 11

how many satellites a GPS need

Answer 11

4

Question 12

how does RAIM check GPS accuracy?

Answer 12

with 5th satellite

Question 13

What are the pre-flight requirements for GPS flight?

Answer 13

1) Check databased
2) Check certification for IFR
3) Review WAAS and GPS notams
4) Determine if the manual is available

Question 14

When is a RAIM check is required?

Answer 14

1) Non Waas: Check the GPS raim availability along the route

Question 15

Next step if you lose the RAIM signal more than 5mins

Answer 15

1) Flight should be delayed, canceled or re-routed

2) Assess the capability of navs for different airports

Question 16

How can you check if RAIM is good to go?

Answer 16

1) FSS to obtain non-precision approach RAIM. information will be provided 1 hour before and after ETA
2) FAA strive availability prediction tool
3) Receiver if the system is installed

Question 17

what additional aircraft documentation should be on board for IFR?

Answer 17

Airplane Flight Manual Supplement

Cockpit reference guide

Question 18

How often GPS databased need to be updated?

Answer 18

Navigation databased for every 28 days

Obstacle data base for 56 days

Question 19

Can you use expired database for navigation under IFR?

Answer 19

1) Navigation has to be current if it is used for approaches
2) Some unites allow you to fly as long as you use secondary resource
3)

Question 20

Using GPS, do you need alternate means of navigation?

Answer 20

1) NON WAAS Yes

2) If RAIM is available, alternate navs no need to be active.

Question 21

How can a pilot determine what types of operations a GPS receiver is approved for?

Answer 21

FAA approved AFM

Question 22

Can a handled GPS receiver be used for IFR flight?

Answer 22

NO. Only for situational awareness