| Answer | Crossword Clue |
|---|---|
| regulars | recurring at fixed times |
| regular | recurring at fixed times |
| CYCLES | Recurring times |
| HOURS | Fixed times. |
| shoran | system for aircraft navigation in which two signals sent from an aircraft are received and answered by two fixed transponders, the round-trip times of the signals enabling the navigator to determine the aircraft's position |
| shorans | system for aircraft navigation in which two signals sent from an aircraft are received and answered by two fixed transponders, the round-trip times of the signals enabling the navigator to determine the aircraft's position |
