Aircraft HP I
Increase Aircraft Heroes' HP
Max level: 5
Research levels
| Level |  Power |  Food |  Iron |  Coin | Base research time | Requirements |
|---|---|---|---|---|---|---|
| 1 | 2,300 | 713,800 | 713,800 | 2,141,500 | 3 hr 49 min |
|
| 2 | 5,600 | 1,539,000 | 1,539,000 | 4,617,100 | 1 day 3 hr 32 min |
|
| 3 | 12,300 | 6,232,300 | 6,232,300 | 18,696,900 | 5 days 14 hr 45 min |
|
| 4 | 23,800 | 18,846,500 | 18,846,500 | 56,539,500 | 16 days 12 hr 10 min |
|
| 5 | 40,200 | 38,282,000 | 38,282,000 | 114,845,900 | 33 days 11 hr 26 min |
|