Block 5 Exam Flashcards
What are the 3 Main Levels of Automation?
- Hand Flying
- Flight Directors (autopilot commands)
- Flight Management System/Computer (FMS)
How do crews become task saturated in flight?
- When they attempt to operate at a Level of Automation that’s too high for the rapid change in flight path
- YOU must drop a Level of Automation
What are the 3 Segments of GPS?
- Space (Satellites)
- Control (Ground-Stations)
- User (Aircraft)
What requirements are there for flying IFR with GPS as the main NAVAID?
- Any Non-WAAS GPS must be equipped with RAIM
- WAAS GPS must meet standards
- MUST CHECK NOTAMs prior to IFR flight
- Must have an approved ALTERNATE means of navigation appropriate to flight
What are the 3 different CDI sensitivities with GPS navigation? When do they automatically activate?
- En-Route (30nm+ from destination) = 2nm full scale deflection either side
- Terminal (~30nm TO/FR) = 1nm full scale deflection either side
- Approach (Past Final Approach WP) = 0.3nm full scale deflection either side
How many satellites are there in orbit? In theory how many should be accessible at any given location?
- 30 Satellites
2. 6 Satellites
How do Satellites determine a/c location?
Line of Position!
- Signals from several satellites intersect at the a/c and then are able to triangulate location
What is RAIM? How many satellites does it need?
- RECEIVER Autonomous Integrity Monitoring
2. 5 to detect a bad signal, 6 to kick it out and replace it
What are the advantages of GPS navigation?
- Cheap
- Available 24/7
- Unlimited # of users
- Extremely Accurate
What makes up the major Control Segments of GPS?
- Monitors and Adjusts satellite performance
- 6 Monitoring Stations across the world (Master control sation in Colo. Springs)
- 4 Ground Antennas across the world
What are the requirements for the Airborne Segment of GPS?
- Must be INSTALLED in a/c
- Must meet IFR operation standards (RAIM or WAAS equipped)
How does GPS function to locate a/c?
- Transmits codes on 2 frequencies (Status Message and Pseudo Random Code)
- Receiver measures Travel Time and satellite position to determine Altitude
- Triangulation determines lat/long
What 3 things does a Pseudo Random Code consist of?
- Course Acquisition
- PA Code/PPS precise positing service
- Speed (186,000 mps)
What are 3 errors of GPS?
- LINE OF SIGHT
- Space Weather (solar interference)
- Terrestrial interference/Jamming/Spoofing
What are some benefits of WAAS?
- Generates electronic glide path independent of ground equipment/barometric aiding
- Manual RAIM calculation not required
- Eliminate cold temperature affect
- Don’t need to install ground station (cheap)