Navigation (general) Flashcards
1 minute latitude equals _____ nm
Is longitude the same?
1 nm
No
One nautical mile is ____ feet
6080
What are isogonic lines?
Dashed lines on a map that represent the same amount of magnetic variation
What is an agonic line? Where is it located?
Where the geographic pole and magnetic pole line up (zero magnetic variation).
It moves but is currently west of Thunder Bay
What is magnetic deviation?
What are ways it can be compensated for?
-Compass in aircraft may not point directly North because of interference with metal and radio equipment.
-May be corrected with a correction magnet, or compass correction card
What is heading?
What is a factor that can differentiate heading from track?
The direction the aircraft’s nose is pointed in relation to true or magnetic north.
Track = actual path the helicopter takes.
Wind strength and direction can influence our heading needed to maintain a certain track.
What is airspeed?
Indicated airspeed?
True airspeed
speed through the air.
- Indicated airspeed is the airspeed that is read of the airspeed indicator.
- True airspeed is calculated based on positional error, altitude, and temperature.
How often is the CFS published?
Every 56 days
What is a VNC?
What are the straight lines on this map referred to?
What is the scale?
How often are they updated?
VFR Nagvigation Chart
They are called great circles
1:500,000
Usually updated every 2 years, if there are changes between then, a NOTAM will be issued
What is a VTA?
What is a straight line drawn on these charts?
What is the scale?
How often are these updated?
Where can you check if you have the most recent/valid chart?
VFR Terminal Area Chart
A rhumb line
Scale is 1:250,000
Usually every 2 years
You can check Nav Canada in the aeronautical information products, then the NOTAMS, as well as the CFS
What is the WAS?
Validity period?
Water Aerodrome Supplement
Contains all water aerodromes shown on VFR charts
Re-issued annually
What is the DAH?
What can you find in it?
Validity period?
Where can you find it?
Designated Airspace Handbook
It answers the question of who to contact for special use/restricted areas, etc
56 days
Free pdf download online
Two airports on a VNC are two inches apart from each other. Roughly what distance are these airports apart?
16 sm
What does it mean if the radio frequency is underlined? What if it is not underlined?
Underlined frequencies in radio/navaid boxes indicate no ATS communication on this frequency.
Non-underlined frequencies in navaid boxes = TACAN and DME channels. No ATS communication.
A standard time zone is __ degrees wide.
15
- 1 mile a minute is ___ knots.
- 2 miles a minute is ___ knots.
52 knots
104 knots
