Final answer:
The answer is False, as the APU fire extinguishing system typically requires manual activation on the ground.
Step-by-step explanation:
The correct answer is False. The Auxiliary Power Unit (APU) is a device on aircraft that provides energy for functions other than propulsion. While the APU does have a fire extinguishing system, it is not designed to operate automatically while the aircraft is on the ground.
Instead, the extermination of the fire would generally require manual activation by the crew or other personnel, particularly when the aircraft is on the ground. This is a safety feature to ensure accurate and controlled response to fire incidents. Depending on the specific aircraft design and its operational protocols, the extinguishing system may operate differently, but for many commercial aircraft, the indication of an APU fire on the ground necessitates a manual response.