Downloaded from https://www.everyspec.com MIL-STD-1808C w/CHANGE 1 SYSTEM SUB-SYSTEM TITLE DEFINITION 35 OXYGEN Those subsystem components that store, generate, regulate and deliver oxygen to the passengers, and flight crew. Includes bottles, relief valves, shutoff valves, outlets, regulators, masks, walk-around bottles, etc. 00 GENERAL 10 CREW The portion of the system that furnishes oxygen to the flight crew. 20 PASSENGER The portion of the system that furnishes oxygen to the passengers. 30 PORTABLE The portion of the system with an independent oxygen supply that can be transported about the airplane.
40 ON BOARD OXYGEN GENERATING SYSTEM The portion of the system that generates oxygen for distribution in the other subsystems. 44