Weather 1

Question 1

What does CAVOK stand for?

Answer 1

Ceiling/clouds and visibility okay

Question 2

What is the definition of CAVOK?

Answer 2

vis 10km or more
no clouds below 5000 feet
no CBs
no significant weather phenomena

Question 3

What does NSC stand for?

Answer 3

NIL significant clouds

Question 4

What is RVR?

Answer 4

Runway visual range

Question 5

What is the definition of ceiling?

Answer 5

Height above ground to the lowest cloud layer which obscures more than half of the sky (below 20000 feet); categories to count as ceiling: broken, overcast

Question 6

What is the reference regarding wind direction in a METAR?

Answer 6

True

Question 7

What is the reference regarding wind direction in a TAF?

Answer 7

True

Question 8

What is the difference between a True and Magnetic course?

Answer 8

The true north is the geographic north of the north pole. Due to the earth’s rotation and the magnetic field of the earth, the magnetic north is not the same as the true north. There is a variation.
True course is the aircraft’s course over ground relative to true north. Magnetic course is the true course corrected for magnetic variation.

Question 9

What does ISA stand for?

Answer 9

International Standard Atmosphere

Question 10

What are the initial values at the surface of the ISA?

Answer 10

Standard atmospheric conditions:
temperature 15°C
pressure 29,92 inches mercury or 1013,2 millibar

Question 11

What is the cloud coverage of: 
FEW
SCT
BKN
OVC

Answer 11

FEW (few) = 1/8-2/8
SCT (scattered) = 3/8-4/8
BKN (broken) = 5/8-7/8
OVC (overcast) = 8/8