Through which port does the engine supply bleed air to the heating system?

The engine supplies bleed air to the heating system through the P3 port, which is specifically located on the right side of the engine. This bleed air is essential for various systems, including heating, as it helps in regulating the temperature and ensuring that the cabin environment is comfortable for passengers and crew.

The P3 port on the right side is designed to effectively manage and direct this bleed air for optimal performance in the heating system. Utilizing bleed air from this location ensures reliability and efficiency in the system's operation, as the right-side engine components are calibrated to handle and channel this resource appropriately.

Understanding the specific function and location of the P3 port reinforces the importance of engine design and airflow management in aviation systems, particularly concerning cabin pressurization and environmental controls.