User blog comment:Hayashi H/30 October Fighter Quest-chain/@comment-26445921-20151105050958/@comment-26486243-20151105163843

While this is not listed in our wiki yet, wikiwiki claims A19 might also be needed for F22 to appear. That is, the Akagi-Kaga-Hiryuu-Souryuu green quest. I cannot confirm whether they are correct or not, but it's the only direction I can point you in at the moment.