Final answer:
The 14th stage bleed air augments the normal 10th stage when there is a need to increase the airflow in the system. It is used for engine anti-ice systems and cabin pressurization.
Step-by-step explanation:
The 14th stage bleed air augments the normal 10th stage when there is a need to increase the airflow in the system. Bleed air is usually taken from different stages of the compressor, including the 10th and 14th stages. The 14th stage bleed air is typically used for engine anti-ice systems and cabin pressurization.