| Clue | Source | Date |
|---|---|---|
| What follows a plane going from Richmond to Chicago? | New York Times | 23 Aug 2022 |
| *Cloudlike line behind a jet (see letters 3-6) | Universal | 03 Dec 2019 |
| Sign of exhaustion? | ||
| Vestige of an aircraft's path | ||
| Jet stream | ||
| Jet stream? | ||
| Streak in an aircraft's wake |