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CA.VIII.A.R4FAA-S-ACS-7B · Nov 2023Risk management

Combustion hazards in an oxygen-rich environment.

ACS element text (the applicant demonstrates understanding of)

Combustion hazards in an oxygen-rich environment.

Bottom line

Pilots should be aware of the increased danger of fire when using oxygen. Oils and greases may ignite if exposed to oxygen and cannot be used for sealing the valves and fittings of oxygen equipment.

FAA references

  1. AC 61-107, para. 2-9 — AC No: 61-107B
  2. PHAK ch. 7 (p. 7-37) — FAA-H-8083-25C (2023)
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