The ozone limit of 0.25 PPM applies up to which altitude?

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Prepare for the GoJet Airlines CRJ-550 Test. Use flashcards, multiple choice questions, and detailed explanations to ace your exam!

Multiple Choice

The ozone limit of 0.25 PPM applies up to which altitude?

Explanation:
Ozone in cabin air is a pollutant that can irritate the eyes and lungs, so aircraft environmental control systems are designed to keep cabin ozone levels below a safe limit. The 0.25 ppm limit is the value used to ensure acceptable cabin air quality across the typical cruise envelope. For the CRJ-550 and related procedures, that limit is specified to apply up to flight level 320 (about 32,000 feet). Within that altitude range, the environmental control and filtration system are designed to maintain cabin ozone at or below 0.25 ppm under normal operation. Above that altitude, the system’s performance and certification limits can differ, so the same fixed limit is not assumed beyond FL320.

Ozone in cabin air is a pollutant that can irritate the eyes and lungs, so aircraft environmental control systems are designed to keep cabin ozone levels below a safe limit. The 0.25 ppm limit is the value used to ensure acceptable cabin air quality across the typical cruise envelope. For the CRJ-550 and related procedures, that limit is specified to apply up to flight level 320 (about 32,000 feet). Within that altitude range, the environmental control and filtration system are designed to maintain cabin ozone at or below 0.25 ppm under normal operation. Above that altitude, the system’s performance and certification limits can differ, so the same fixed limit is not assumed beyond FL320.

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