FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

The characteristics of a chemical or solid state oxygen system include the production of oxygen through a chemical reaction and the solid-state form of the oxygen storage, which typically comes from a compound that releases oxygen when heated.

In a chemical or solid state oxygen system, the process involves a chemical compound breaking down to release oxygen, making this system efficient and lightweight compared to traditional gas cylinders. The absence of high-pressure gas means there is a reduced risk of explosion or catastrophic failure associated with pressurized systems.

The characteristics associated with the system often include low maintenance needs and a controllable oxygen output through a regulated device, contributing to its reliability in emergency situations where oxygen supply is critical.

Therefore, the combination of these features points to why the choice that encompasses these characteristics is seen as the correct answer. The other alternatives may not sufficiently represent the complete set of traits unique to chemical or solid-state oxygen systems, leading to their exclusion.