Primitive, Inner Sphere
BattleMechs (BM), IndustrialMechs (IM)
TechManual (p. 210)
One of the oldest examples of so-called “lost” technologies, CASE (as we know it today) actually predates the Star League by nearly a hundred years. Indeed, its earliest progenitors can be traced back even farther. Developed as a damage-control technology in the event of catastrophic internal explosions, CASE—then as now—became an intrinsic part of the armor system on BattleMechs, Combat Vehicles and fighters, intended to save crews and machines for later salvage. When heat or damage triggers an ammunition explosion in a CASE-protected location, specially designed blow-away panels direct the force of the explosion outward, through the rear of the machine. Though any remaining internal structure in the affected section is typically damaged in these blasts, CASE has spared many a machine that once would have been fully consumed by an internal explosion.
If ammo (or any other explosive component, such as a gauss rifle) in a CASE-equipped location explodes, it still damages the internal structure in that location as normal. However, any excess damage simply dissipates, rather than transferring to an additional internal structure location. Remember that the loss of all internal structure in a side torso location also blows off the corresponding arm, though the arm is not damaged by the explosion and can still be used as a club.
If an ammo explosion transfers into a location protected by CASE, the internal structure in that location takes damage as normal. All excess damage is dissipated, as above. For example, if an Inner Sphere ’Mech suffered an arm ammo explosion and damage transferred to a side torso equipped with CASE, the internal structure of the side torso would suffer damage as normal, and then the excess damage would harmlessly blow out the CASE panels.Critical Hits:
Critical hits on slots occupied by CASE have no effect and should be re-rolled.
CASE systems are automatic, and are considered active even if the unit is shut down or its pilot/crew is rendered incapable of acting in combat.
May be mounted on any available unit type with adherence to the following construction rules:
May only be mounted in the Torsos