"Hehe, hahahahaha! I done got stuck![1]"
Keith Bryan

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.

Mission Story[]

"UPEO's Commander Park, who had intended to ruin both General Resource and Neucom by aiding the coup d'état, died when his escape helicopter was shot down. As a result, the last ones to survive were the coup d'etat forces of Ouroboros.... Meanwhile, Rena, who had joined Ouroboros like the Player, regained memories that she had previously lost.[2]"
Ace Combat 3: Electrosphere - Namco Official Guide Book


Mission Start[]

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 X-49 "Rena" 1
Icon-AirTGT XFA-36 "Keith" 1 [note 1]
Icon-AirEnemy R-103 3
Icon-AirEnemy Su-43 2
Icon-AirEnemy XFA-36 5
Mission Update Icon-AirTGT 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.[3]


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