ATPL: The ground-air signal "NN" means:
Domanda 454, Air Law - ATPL - Airline Transport Pilot license
| We have found all personnel. |
| We are not able to continue returning to base. |
| Operation completed. |
| Nothing found will continue the search. |
| We have found all personnel. |
| We are not able to continue returning to base. |
| Operation completed. |
| Nothing found will continue the search. |
