User blog comment:Generale wareagle/How to unlock the X-49, Ui-4045 and XF-900 on the japan version of Ace Combat 3/@comment-159.205.179.65-20130209163526

So you need to purchase the soundtrack prawse Ace combat 3, there is a CD that unlock your aircraft, you install a new save for the Deadcopy, get all planes and all the mission but no weapons OSL, after installation there was no point on playing Ace Combat 3 when everything is unlocked.