Aircraft HP II
Increase Aircraft Heroes' HP
Max level: 5
Research levels
| Level |  Power |  Food |  Iron |  Coin | Base research time | Requirements |
|---|---|---|---|---|---|---|
| 1 | 11,500 | 18,846,500 | 18,846,500 | 56,539,500 | 16 days 12 hr 10 min |
|
| 2 | 26,200 | 30,625,600 | 30,625,600 | 91,876,700 | 27 days 21 hr 32 min |
|
| 3 | 47,600 | 65,079,300 | 65,079,300 | 195,238,000 | 40 days 4 hr 7 min |
|
| 4 | 76,400 | 118,444,400 | 118,444,400 | 355,333,200 | 57 days 20 hr 19 min |
|
| 5 | 116,800 | 232,151,000 | 232,151,000 | 696,453,100 | 83 days 7 hr 11 min |
|