What psi adjustment is made for each degree above/below 70 degrees Fahrenheit for the emergency oxygen bottle pressure?

The correct adjustment for the emergency oxygen bottle pressure is 3.5 psi for each degree above or below 70 degrees Fahrenheit. This adjustment is critical because it helps maintain the proper pressure within the oxygen system, ensuring that the oxygen is readily available and at suitable pressure levels for use in emergencies.

Temperature affects gas pressure, and this adjustment accounts for changes due to temperature fluctuations. When temperatures increase or decrease, the amount of pressure in the oxygen bottle will also change, which could affect its operational reliability. By adjusting the pressure based on temperature, pilots can ensure that the oxygen system will function correctly regardless of the environmental conditions encountered during flight.

This understanding is crucial for safe aviation practices, as incorrect pressure levels could lead to inefficiencies in the oxygen delivery system, impacting pilot and passenger safety in critical situations such as cabin depressurization.