ATPL: Which statement is correct concerning a mountain ridge where a marked mountain wave has been reported ?
Domanda 597, Meteorology - ATPL - Airline Transport Pilot license
| There are always rotor clouds |
| The atmosphere is unstable at the level of the mountain tops |
| Ragged altocumulus lenticularis is an indication for the presence of moderate/severe turbulence at the level of these clouds |
| The axis of a rotor is horizontal and perpendicular to the mountains |
