The Earth Federation Army was promoting a plan to strengthen the aircraft with emphasis on the performance of the "RX - 78 Gundam" which had high fighting results at the end of the one - year war. The plan later called "FSWS (Increasing Weapon) plan" is to increase the attack power per unit of "RX - 78 Gundam" to the same as the space battleship and to establish a small elite unit to operate with multiple aircraft It was.
For reinforcement of the "RX-78 Gundam" aircraft, first strengthening of the armor was proposed. It was to install the easy armored type armor to the abdomen and lumbar region where the weakness of the armor was pointed out and the frequently used chest, shoulder, arms and legs as armor.
However, this alone improves defense performance, it does not lead to strengthening of attack power. Therefore, a proposal was added to increase armor to fix armament and preliminary propulsion function to improve mobility of the airframe. As a result, the thermal power is greatly increased by placing an armored retractable missile bay in the shoulder and knee, a Cannon cannon in the backpack, and a two-beam beam gun on the right arm.
In addition, a large preliminary propulsion machine was added to the armored arm of the leg, making it possible to demonstrate high maneuverability despite heavy armor. Increasing weapons capable of strengthening this offensive is called "Full Armor Operation", and the aircraft wearing increased weapons is named "FA-78-1 Full Armor Gundam".
Based on the high level of the basic performance of "RX - 78 Gundam", this plan realized even by improving attack power, defense performance, and mobility, if actually put into battle, is called the end of the one - year war Even considering the situation, it would have been an effective force against the Zeon dictatorship.
However, there is also a timing that the plan itself was planned at the end of the one year war and the trend of battle had never existed, so it is not clear whether the aircraft itself was actually manufactured. However, the plan was in common with the chobam armor equipment of "RX - 78NT - 1 Alex" which was developed at the same time, and it is certain that full armor operation was being studied up to the practical stage It seems to be.