Counterterrorism is the 21st mission in the international version of Ace Combat 3: Electrosphere.


A large airborne aircraft carrier has been spotted over Megafloat. UPEO Intelligence suggests that this is an attempt by a coup d'état force to take over Megafloat. Scramble immediately to destroy the carrier and suppress the group.



Destroy all UI-4053 parts.

Update 1

Shoot down the escort fighters.

Update 2

Shoot down the UI-4054.

Enemy Lists

Standard Units

Section Unit Count Notes
Initial Icon-AirTGT UI-4053 Sphyrna 1 [note 1]
Mission Update Icon-AirTGT XFA-36A Game 1
Icon-AirTGT Su-43 Berkut 3
Mission Update #2 Icon-AirTGT UI-4054 Aurora 1


  • A: Mission completed in 4:00 or less.
  • B: Mission completed in 4:00-5:59.
  • C: Mission completed in 6:00+.


[Mission Start]

(After the UI-4053 is heavily damaged:)

Destroy the escort aircraft guiding the carrier away from battle.

(After the UI-4054 is shot down, the screen fades to black.)

[Mission End]


Megafloat has been defended from Ouroboros, the group behind the coup d'état attempt. The downed UI-4054 was reportedly unmanned and details are still under investigation.


  1. The Sphyrna has four targets that must be destroyed.


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