ATPL: What does the abbreviation 'HX' mean?
Domanda 90, VFR Communications - ATPL - Airline Transport Pilot license
| Sunrise to sunset. |
| No specific working hours. |
| Continuous day and night service. |
| Sunset to sunrise. |
| Sunrise to sunset. |
| No specific working hours. |
| Continuous day and night service. |
| Sunset to sunrise. |
