In the described condition, what does placing the engine start switch in FLT provide?

In the described condition, what does placing the engine start switch in FLT provide?

• A. ignition to both igniters and does not open the start valve
• B. ignition to the selected igniter only
• C. no ignition is provided
• D. the engine automatically shuts down

Answer: (A)

In this situation the switch in FLT is all about ignition readiness without starting the engine. When set to FLT, the ignition system is powered and both igniters are energized, providing spark in the combustor, but the start valve remains closed so no fuel is delivered. That means you have ignition available for a light-off check or to preserve ignition capability during abnormal conditions, without actually starting the engine. So the correct idea is that ignition is supplied to both igniters, while the start valve stays shut to prevent fuel flow. This differs from situations where only one igniter would be energized, or where fuel flow would be allowed to start combustion, or where the system would shut the engine down automatically.

In this situation the switch in FLT is all about ignition readiness without starting the engine. When set to FLT, the ignition system is powered and both igniters are energized, providing spark in the combustor, but the start valve remains closed so no fuel is delivered. That means you have ignition available for a light-off check or to preserve ignition capability during abnormal conditions, without actually starting the engine.

So the correct idea is that ignition is supplied to both igniters, while the start valve stays shut to prevent fuel flow. This differs from situations where only one igniter would be energized, or where fuel flow would be allowed to start combustion, or where the system would shut the engine down automatically.