How can you determine whether a fire is internal or external on an aircraft?

The correct option focuses on identifying the indicators of an internal fire through smoke from the exhaust, which can be a significant sign of malfunctioning systems or fuel combustion inside the aircraft’s engine area. It is crucial for plane captains and ground crews to be vigilant for such signs, as they may indicate serious issues that could escalate rapidly.

Additionally, external fires often present with visible paint bubbling caused by extreme heat or smoke emanating from other sections of the aircraft, such as the fuselage or wings, indicating that there may be a fire involving materials or components outside of the aircraft’s interior systems.

Being able to differentiate between these two types of fires is essential for effective emergency response. Internal fires can often lead to shutdown of critical systems, while external fires might affect the overall integrity and safety of the aircraft from the outside. Recognizing these signs can help crews assess the situation accurately and take appropriate action, such as initiating firefighting procedures or evacuating personnel, thereby enhancing safety on the ground and during flight operations.