What is the maximum engine start temperature for a hot start?

The maximum engine start temperature for a hot start in the King Air 350 is indeed 850°C. This limit is crucial for ensuring the safety and integrity of the engine components during the starting phase. Exceeding this temperature can lead to damage to the engine's turbine section due to the extreme heat, potentially causing failures or reduced engine life.

Understanding this limitation is essential for pilots and maintenance personnel as it helps to prevent excessive thermal stress on the engine during start-up, which is particularly important in hot weather conditions where the engine may already be preheated. Adhering to this maximum temperature limit ensures that the engine operates within its designed performance parameters and promotes overall reliability and safety during flight operations.

The other options represent temperatures that exceed the recommended maximum, which is why they are not suitable for a safe engine start. Operating at temperatures higher than 850°C poses significant risks and goes against the established operating procedures for the aircraft.