The correct procedure to follow in the event of a hot start to prevent torching in a gas turbine engine is to

• A. Motor the engine with the fuel supply cut OFF
• B. Increase throttle to maximum
• C. Shut down immediately and restart after cooling
• D. Lean the fuel mix and continue

Answer: (A)

When a hot start is detected, ignition can occur again if fuel is introduced into an already hot combustor, causing torching that can damage the turbine. The best action is to motor the engine with the fuel supply cut off. By turning the engine over without fuel, the compressor and turbine continue to rotate, driving cooling air through the system and purging residual heat and fuel. This prevents any ignition from reoccurring and lets temperatures decay to safe levels before attempting a normal start again. Increasing throttle would feed more fuel and worsen the risk of torching, and leaning the fuel is not a remedy for this turbine-start condition. Shutting down and restarting later removes the immediate risk but does not address cooling if a restart is attempted too soon. So, fuel-off motoring is the appropriate procedure to avert torching.