| Clue | Source | Date |
|---|---|---|
| Places to 99 Down with bull's-eyes | Newsday | 10 May 2020 |
| Sites for some touchdowns | New York Times | 21 Apr 2018 |
| Sites for some touchdowns | ||
| Vertical landing spots | ||
| Landing areas for some fliers | LA Times Daily | 13 Sep 2015 |
| Landing areas for some fliers | ||
| Landing spots for choppers | ||
| Downtown landing spots | ||
| Copter landing sites | ||
| Some landing sites | ||
| Whirlybird sites | ||
| Termini for short-range aircraft. | ||
| Terminals for rotary-wing aircraft. |