Oxygen supply system and method for testing an oxygen supply system

A method for testing an oxygen supply system, the method comprising:

• triggering a test routine of a built-in test equipment (BITE) in a microcontroller of the oxygen supply system;
• monitoring and testing, by the BITE, the operability of one or more of the microcontroller, a latch controller, a pressure sensor and an energy storage of the oxygen supply system;
• and
• outputting, by the microcontroller, a testing result signal via data interface of the oxygen supply system.

An aircraft comprising an oxygen supply system, the oxygen supply system comprising:

• a container housing having a container door;
• a latch controller coupled to a latch of the container door and configured to control the latch to releasably open the container door;
• a microcontroller coupled to the latch controller and configured to output a first latch deployment signal to the latch controller to cause the latch controller to open the latch;
• a pressure sensor coupled to the latch controller and configured to output a second latch deployment signal to the latch controller to cause the latch controller to open the latch;
• and
• an energy storage coupled to the microcontroller and the pressure sensor, the energy storage being configured to supply the microcontroller and the pressure sensor with electrical energy,
• wherein the microcontroller includes built-in test equipment (BITE), the BITE being configured to monitor and test the operability of one or more of the microcontroller, the latch controller, the pressure sensor and the energy storage.