NetJets Longitude 700 Practice Test

At what altitude does automatic cabin dump occur?

13,700 feet 12,000 feet 15,000 feet 14,000 feet

Correct Answer:

13,700 feet

Explanation:

Automatic cabin dump is a safety feature that vents cabin air to prevent dangerous cabin pressures when pressurization is compromised or needs to be relieved quickly. On the Citation Longitude, the system is set to begin this dump at about 13,700 feet cabin altitude. Reaching that threshold causes the outflow valve to open and vent air, lowering the cabin pressure to a safer level. This specific altitude is chosen to balance maintaining comfortable pressure during normal climbs with providing rapid relief in a decompression or pressurization fault.

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