What Consider is a Smooth Landing

Maintenance New Update With Mini games
Is It Above 70% Above Or 80% Above
For The Next Update Maintenance has your fleet Wear introduced

  • New airplane status “WEAR” will be introduced. The aircraft wears out gradually (strenuous landings on short runways or hard landing in minigame, long periods of idling). Quick maintenance on the stand will reduce wear.

I think only perfect landing will count. When you do it also you will get wear decrease as bonus.