ATPL: What does the abbreviation 'H24' mean?
Domanda 42, IFR Communications - ATPL - Airline Transport Pilot license
| Sunrise to sunset |
| Continuous day and night service |
| No specific working hours |
| Sunset to sunrise |
| Sunrise to sunset |
| Continuous day and night service |
| No specific working hours |
| Sunset to sunrise |
