How quickly are aircraft designed to evacuate?

• A. In 3 minutes.
• B. In 90 seconds or less.
• C. In 5 minutes.
• D. In 2 minutes.

Answer: (B)

Emergency evacuation time is the key idea. Aircraft are certified to be able to evacuate all passengers and crew in 90 seconds or less, even with half the exits inoperative. This standard shapes the whole design of doors, slides, and cabin layout, plus crew procedures, so people can reach safety quickly in a real emergency when visibility is poor and smoke is present. The 90-second benchmark is intentionally tight because every second matters after a crash or fire. Other time frames are longer than the certification requires, so they don’t meet the safety standard.