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AI.II.N.K3aFAA-S-ACS-25 · Nov 2023Knowledge

a. Characteristics, limitations, and applicability of continuous flow, demand, and pres...

ACS element text (the applicant demonstrates understanding of)

Operational factors, including: a. Characteristics, limitations, and applicability of continuous flow, demand, and pressuredemand oxygen systems

Bottom line

Although certificated up to 41,000 ft MSL, system capabilities require very careful attention when using continuous flow oxygen systems above 25,000 ft MSL.

Key numbers

Key numbers for a. Characteristics, limitations, and applicability of continuous flow, demand, and pres...
NumberWhat it means
41,000 ft MSLContinuous flow cert
above 25,000 ft MSLContinuous flow caution
up to 40,000 ft MSLDemand mask limit
above 40,000 ft MSLPressure demand

FAA references

  1. AC 61-107, para. 2-9 — AC No: 61-107B
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