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Home > Exam Questions > ATPL - Airline Transport Pilot license > Aircraft General Knowledge - Airframe, Systems, Powerplant > The equipment of an oxygen supply installation must be kept absolutely free of oil or grease traces as:

491 - ATPL - The equipment of an oxygen supply installation must be kept absolutely free of oil or grease traces as:

Question 491 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

These substances mixed with oxygen could catch fire in the presence of a spark.

The oxygen system would be contaminated.

These substances could plug the oxygen masks filters.

These substances catch fire spontaneously in the presence of oxygen under pressure.

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