Final answer:
In case of an APU fire during fueling, stop fueling, shut down the APU, activate fire suppression, evacuate, and call emergency services.
Step-by-step explanation:
The emergency procedure for an APU fire during fueling typically involves immediately stopping fueling operations, shutting down the Auxiliary Power Unit (APU), and activating the APU fire suppression system if available. It is crucial to also evacuate the area to ensure the safety of personnel and to notify emergency services. This procedure might vary depending on the aircraft type and the associated guidelines. The information provided about engines with different flames and fuel mixtures does not directly relate to standard APU fire emergency procedures during fueling.
In the event of an Auxiliary Power Unit (APU) fire during fueling, the emergency procedure involves immediately stopping the fueling process and activating the APU fire extinguisher. The APU fire extinguisher is typically a built-in system that releases a fire suppression agent, such as Halon or CO2, to extinguish the fire. Additionally, the aircraft's fueling personnel should notify the appropriate emergency response team and follow their procedures for addressing the fire.