Certification uses a 90-second evacuation demonstration
Transport-category aircraft are certified against emergency-evacuation requirements that assume only a portion of exits are usable. The demonstration is a design benchmark, not a promise that every real evacuation ends at exactly 90 seconds.
Cabin crew decide which exits are safe to use
An exit beside fire, water, debris or an obstacle may be blocked even if the door itself works. Flight attendants assess outside conditions before opening and redirect passengers when needed.
Slides turn doors into rapid escape routes
Inflatable slides deploy from many main doors and some can double as flotation devices. They are designed for fast descent, which is why high heels, baggage and hesitation can create problems.
Commands are intentionally short and repetitive
During an evacuation there is little time for explanation. Cabin crew use practiced commands to get people moving, leave bags behind and clear the bottom of the slide.
Passenger baggage is a serious obstacle
Retrieving a suitcase slows the flow, narrows aisles and can damage slides. Safety briefings emphasize leaving belongings because seconds matter when fire or smoke is present.
Evacuation is ordered only when staying onboard is more dangerous
A stopped aircraft can sometimes remain the safest place while crews assess a warning. Pilots and cabin crew weigh fire, smoke, fuel leaks, location and rescue response before initiating evacuation.
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