Syllabus Flashcards
Meridians are what circles?
Great circles
What does 1 degree equal?
60 minutes so 60 NM
What does 1 minute equal to?
1/60 degree of latitude so 1NM
What does 1 second equal to?
1/60th of a minute
True north lines to what?
Meridians
What is true bearing?
The angle you’re nose is pointing from true north
What is magnetic bearing?
The angle you’re from magnetic north
What is compass bearing?
Angle you are from compass north
What is deduced reckoning?
Process of calculation position, by using previously known position and estimate of speed and course to work out current position.
What is position fix?
Fixed position
What is position line?
Line where an aircraft is known to be at a certain time
What is height ?
Distance above a datum
What is elevation?
Vertical distance of a point or level measured from sea level.
What is altitude?
Vertical distance of a level or point measured from mean sea level.
What is the time for twilight?
Time between MCT and sunrise and ECT and sunset
What is MCT?
When the disk of the sun is 6 degrees below the sensible horizon
What is ECT?
When the disk of the sun is 6 degrees below the sensible horizon
What to remember with sunrise and sunset regarding horizons vs MCT and ECT
Set and rise = visible
MCT and ECT = sensible
What is sunlight?
The time between sunrise and sunset
What are the effects of speed changes?
Bad weather config allows pilot to lower speed and react better and have more time to do stuff.
Effect of altitude?
When you’re higher you can see further whereas closer to ground level you have less visibility
What are the considerations for navigating in reduced vis?
Low vis + unfamiliar terrain and low cloud is a bad combination.
Ascending above cloud you’ll have little to no features for navigation so you’re pre much blind.
Considerations for poor vis flying?
Reduce speed if possible
Use charts to mark off known positions as you go
Synch DI with clock and check heading frequently
Select multiple checkpoints (on your track)
Factors to consider when selecting a VFR route? (6)
- terrain
- wx
- time
- enroute aerodrome for fuel
- aircraft capabilities and performance
- pilot and pax comfort