Memory Error

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Memory Error is the 37th campaign mission in the Japanese version of Ace Combat 3: Electrosphere and the fourth mission in the Ouroboros (I) story arc.



The player must attempt to shoot down Rena Hirose's X-49 Night Raven. It has very high maneuverability and will take a few hits to damage. Eventually, Keith Bryan will end up crashed into the X-49's wings, slowing it down and providing an opportunity for the player to shoot it down.

Mission Update

After destroying the X-49, the player must attack and destroy the UI-4053 Sphyrna.

Enemy List

Section Unit Count Notes
Initial Icon-AirTGT.svg X-49 "Rena" 1
Icon-AirTGT.svg XFA-36 "Keith" 1 [note 1]
Icon-AirEnemy.svg R-103 3
Icon-AirEnemy.svg Su-43 2
Icon-AirEnemy.svg XFA-36 5
Mission Update Icon-AirTGT.svg UI-4053 1 [note 2]

A Rank

Earning an A rank on this mission requires destroying all 10 of the optional targets: the R-103s, Su-43s, and XFA-36s.[1]


  1. Keith is only available to target after he crashes into the X-49.
  2. There are four different targets that must be destroyed.