Why are leaks in turbocharged exhaust systems particularly damaging at high altitudes?

Leaks in turbocharged exhaust systems can be particularly damaging at high altitudes due to the pressure differential causing torch-like leak behavior. At higher altitudes, the ambient atmospheric pressure decreases, and this change creates a significant difference between the pressure inside the exhaust system and the outside air pressure. This pressure differential can cause exhaust gases to escape forcefully through any leaks in the system, leading to a rapid and potentially destructive expulsion of hot gases.

When these gases escape, they can ignite any nearby combustible materials due to the high temperatures involved, much like a torch. This phenomenon not only endangers the integrity of the exhaust system itself but also poses a risk of fire and damage to other engine components. Understanding the mechanics behind this pressure differential is crucial for pilots and maintenance personnel, as it highlights the need for regular inspections of turbocharged exhaust systems and the importance of addressing any leaks promptly, especially when operating at higher altitudes where these effects are exacerbated.