"I've... seen this place before.[1]"
Rena Hirose

Ghosts of the Past is the ninth mission of the original Ace Combat 3: Electrosphere and is the second mission in the UPEO (II) story arc. This mission is the game's only Canyon flight mission.

Mission Story[]

"Thanks to SARF, combat between the two sides at the Neucom base had been averted. Nevertheless, they got intel that a spy plane belonging to General Resource had been spotted again in a no-fly zone. It was necessary to confirm their intentions so as to avoid further escalation between both companies. With Rena's plane repaired and reassigned back to SARF, they were dispatched to follow the spy plane.[1]"
Ace Combat 3: Electrosphere - Namco Official Guide Book


A General Resource spy plane has been identified in a no-fly zone.
General Resource appears to be
up to something once again.
We must verify their intentions.
Follow this trespassing spy plane!
Note that the sky will be covered by a radar net.
Watch your altitude.

Aircraft Selection[]

EF2000E Typhoon II
MiG-33 Fulcrum SS
F/A-18U Hornet ADV
F-16XFU Gyrfalcon
R-101U Delphinus #1
R-201U Asterozoa


The mission's objective is to follow a General Resource spy plane through the Hatties Ravine while remaining below the rim of the ravine to avoid radar detection. Several AH-66B Comanche II attack helicopters in the ravine will fire at the player, and are not primary targets.

Once the player follows the spy plane far enough, they will find General Resource's Secret Development Facility, and are ordered to destroy it. The mission ends with a Mission Accomplished once the player destroys the main base facility.

While the player is told not to go above the rim of the ravine or shoot down the spy plane, doing either does not fail the mission. Instead, these actions end the mission with a Mission Over, leading them to Fragile Cargo.

Enemy List[]

Section Unit Count Notes
Mission Start Icon-AirEnemy AH-66B 17
Icon-AirNeutral A/F-117X NAV Hawk 1 [note 1]
Mission Update Icon-GroundTGT BASE 1
Icon-AirEnemy AH-66B 3
Icon-GroundEnemy HYDROFOIL 1
Icon-GroundEnemy OILTANK 2

A Rank[]

An A Rank is obtained on this mission by destroying at least 8 enemies.[2]


If Mission Accomplished:

Inspectors will be sent to that facility in due time.[1]

If Mission Over:

The purpose of GR's spy plane is unknown.[1]


  • The secret facility's location is randomized between three different ends of the ravine.


  1. Shooting down this unit will result in a Mission Over.