What does the abbreviation `HJ` mean?
Domanda 8, Comunicazioni in inglese - PPL(A) - Licenza Pilota Privato (Aerei)
| Sunset to sunrise |
| No specific working hours. |
| Sunrise to sunset. |
| Continuous day and night service |
| Sunset to sunrise |
| No specific working hours. |
| Sunrise to sunset. |
| Continuous day and night service |
