Across

1. Aircraft

4. Hot drink

6. Prefix meaning 3

7. Assemblage of people

8. Ground

9. At no charge

12. Past of spend

14. Belonging to us

16. Equip

17. Strongly disliked

Down

1. Large seed in cherry

2. From another planet

3. Extreme side

4. Also

5. Plenty

8. Intense light beam

10. Perch for birds

11. Something you scratch

13. Laid by a bird

15. Primary color