1. Assistant (9)
6. Storage area (5)
9. Umpire (7)
10. The smallest of the Great Lakes (7)
11. Japanese art of flower arrangement (7)
12. Not failure (7)
13. List (9)
15. Repeat an action or statement (5)
16. Fool (5)
19. Closed (9)
22. Demesnes (7)
23. Okay (7)
25. Deep purplish red (7)
26. Shoulder board (7)
27. Glacial ice formation (5)
28. Not permanent (9)
Down
1. A South American bird (5)
2. Scene (7)
3. A salt of nitric acid (7)
4. Heart artery (5)
5. The personal outfit of a bride (9)
6. Alkalizer (7)
7. Downpour (7)
8. A type of puzzle (9)
13. The outer layer of the skin (9)
14. Helper (9)
17. Any of the natural numbers (math) (7)
18. The Unsinkable Ship (7)
20. Twister (7)
21. Especially fine or decorative clothing (7)
23. Perpendicular to the keel (5)
24. Shabby (5)