What action should responders take when dealing with aircraft fires at gate areas?

When dealing with aircraft fires at gate areas, retracting jetway eyebrows to allow smoke to escape is a crucial action. This measure helps to mitigate the buildup of smoke inside the cabin and improves visibility for both passengers and responders. It also reduces the risk of smoke inhalation for those who may still be inside the aircraft or within close proximity. Proper ventilation can be vital in controlling the fire and ensuring a safer environment for everyone involved.

The other actions listed do not effectively address the immediate dangers associated with an aircraft fire at a gate. Closing all aircraft doors may trap smoke or any potential fire inside, further complicating the situation. Evacuating passengers onto the ramp can create confusion and may lead to additional risks if not managed carefully. Relying solely on onboard fire extinguishers might not provide sufficient firefighting capabilities for larger fires, as they are typically designed for initial response and not for full-scale fire management. Thus, allowing smoke to escape by retracting the jetway eyebrows provides a significant advantage in handling the emergency.