| Answer | Crossword Clue |
|---|---|
| mayday | An international radio distress signal used by ships and aircraft |
| sos | an internationally recognized signal of distress in radio code ??????-?-?-?????? used especially by ships calling for help |
| pans | international distress signal used by shore stations to inform a ship, aircraft, etc., of something vital to its safety or that of one of its passengers |
| pan | international distress signal used by shore stations to inform a ship, aircraft, etc., of something vital to its safety or that of one of its passengers |
