Thread:Shayanomer/@comment-25370154-20150516131935/@comment-34452963-20150516142512

The problem is that the description of the SAU on "Items List" says "Using one of these requests will increase the maximum level of a special aircraft by 1" and comparing the the NSU form that automatically upgrades your plane from Level 5 to 6, it says "Using one of these requests will allow you to upgrade the performance...", there we can see that the SAU only unlocks the level :/ it's disappointing, though...