Final answer:
To deactivate the crew oxygen mask microphone after use, remove the mask, locate the microphone, switch it off, and store the mask.
Step-by-step explanation:
To deactivate the crew oxygen mask microphone after use, follow these steps:
- Remove the oxygen mask from your face by releasing the mask straps.
- Locate the microphone on the mask, usually near the chin area.
- Push the microphone switch or button to the off position.
- Ensure that the microphone is no longer transmitting by checking the audio panel or communication system.
- Store the oxygen mask in its designated storage area.
It is essential to deactivate the crew oxygen mask microphone after use to avoid unintended transmission and conserve battery life.