What does the HSP automatically prevent?

• A. It prevents overspeed during engine starts
• B. It prevents over temperature during engine starts by shutting down the engine
• C. It prevents loss of hydraulics
• D. It prevents flameout during start

Answer: (B)

Hot Start Protection is designed to prevent an overheating start. It watches engine ITT (and related start parameters) during the start sequence, and if the temperature rises to a level that indicates a hot start or the engine isn’t accelerating normally, it automatically shuts the engine down. This stops fuel flow to prevent damage from excessive temperatures, protecting the compressor and turbine during the critical start phase. Other protections handle different issues—overspeed, loss of hydraulics, or flameout during start—so the HSP’s specific role is to prevent overtemperature during engine starts by shutting the engine if conditions indicate a hot start.