Talk:Type 0 Fighter Model 52 (Skilled)/@comment-30087857-20161224095457/@comment-28112544-20161224222105

21 skilled has the longest fighter range at the moment, so they come in handy during events (4x 21S for 7-range node or Taitei + 3x 21S for 10-range support). It is also cheaper to upgrade lower tier fighters then use conversion quests.

Judging from how LBAS mechanics have been changing (harse flight range requirements, 2 base sortie & 1 base defend for final map), you probably wanna keep 3-4 max-mod 21S. You may convert the excess to 52S through F25 if you lack high-end fighters.