Catastrophic Structural Damage

Roll Durability vs TN 10.

Robot Modes:
Success means a randomly determined appendage is useless.
Failure means it has been severed, and the character loses an EC.

Other Modes:
Success means a significant randomly determined function is lost.
Failure means the mode loses a part: a wheel, thruster, wing, a breach of passenger/crew compartment, etc.

If the Durability rolls fails, the character's other modes are always affected as well.

Character must Resist Breach