A red CABIN ALT message indicated that the cabin altitude exceeds ___ ft. An amber CABIN ALT message indicates the cabin altitude is ___.

• A. 10,000 ft / between 8,500 ft and 10,000 ft
• B. 12,000 ft / 9,000-11,000 ft
• C. 8,000 ft / 7,000-9,000 ft
• D. 11,000 ft / 10,000-12,000 ft

Answer: (A)

Cabin altitude warnings use color to show urgency. A red CABIN ALT alert means the cabin altitude has exceeded 10,000 feet, signaling a potential decompression and prompting immediate actions such as deploying oxygen and descending to a safer altitude. An amber CABIN ALT alert indicates the cabin altitude is elevated but still below that critical threshold, specifically between 8,500 and 10,000 feet, serving as a caution that pressurization needs attention but isn’t yet at a danger level. The thresholds described—red at 10,000 ft and amber from 8,500–10,000 ft—match standard practice, while other numbers would not reflect the usual warning definitions.