| It indicates a high probability of heavy snowfall |
| It means the air density is too high for efficient propeller rotation |
| It signals a geomagnetic storm that can cause severe GPS positioning drift or sudden loss of satellite lock |
| It signifies that the wind speed at 120m is exactly 50 knots |
MENU
EN 
IT
ES
DE
FR
PL
CZ
RS
Exam Questions
Training Quiz
Exam simulation
PDF Exam
Contact Us
Prices
Are you a school?
App Mobile