GPS, RNAV, WAAS, RAIM Flashcards
RNAV stands for
Area Navigation
What does RNAV displays?
1) Distance and time to a waypoint or course
2) No need to ground facilities to track a course
What does RNAV include?
1) VOR/DME RNAV
2) Inertial Navigation Systems
3) GPS
What is VOR/DME RNAV?
1) pre-GPS RNAV
2) Finds radials and distances from VORs
3) You need to be in the coverage of VOR service
Inertial navigation system
1) Uses gyros, accelerometers and navigation computers to calculate
2) Accuracy is degrades every one or two NM.
3) Needs to be calibrates
Flight Management System
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.)
What does RNAV use as a new technology?
GPS (Global Positioning System)
What is WAAS?
1) Wide Area Augmentation Syste
2) Increases the GPS accuracy
how can you make sure that GPS is reliable?
check the RAIM
RAIM stands for
Receiver Autonomous Integrity Monitoring
how many satellites a GPS need
4
how does RAIM check GPS accuracy?
with 5th satellite
What are the pre-flight requirements for GPS flight?
1) Check databased
2) Check certification for IFR
3) Review WAAS and GPS notams
4) Determine if the manual is available
When is a RAIM check is required?
1) Non Waas: Check the GPS raim availability along the route
Next step if you lose the RAIM signal more than 5mins
1) Flight should be delayed, canceled or re-routed
2) Assess the capability of navs for different airports
How can you check if RAIM is good to go?
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
what additional aircraft documentation should be on board for IFR?
Airplane Flight Manual Supplement
Cockpit reference guide
How often GPS databased need to be updated?
Navigation databased for every 28 days
Obstacle data base for 56 days
Can you use expired database for navigation under IFR?
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)
Using GPS, do you need alternate means of navigation?
1) NON WAAS Yes
2) If RAIM is available, alternate navs no need to be active.
How can a pilot determine what types of operations a GPS receiver is approved for?
FAA approved AFM
Can a handled GPS receiver be used for IFR flight?
NO. Only for situational awareness
