With the engine start lever in IDLE and the engine operating, ignition to both igniters occurs when the engine start switch is in which position?

With the engine start lever in IDLE and the engine operating, ignition to both igniters occurs when the engine start switch is in which position?

• A. CONT
• B. GRD
• C. FLT
• D. IDLE

Answer: (C)

Ignition control is driven by the engine start switch, which selects which igniters are energized. In flight operation, both igniters are wired to be powered to maximize ignition reliability, so selecting the flight position energizes both igniters. Ground start mode uses a different path (typically one igniter) to conserve power and simplify ground operations, and continuous ignition is used to keep ignition available in conditions that might cause flameout. So, when the engine is already running at idle and you want both igniters energized, the appropriate position is flight.

Ignition control is driven by the engine start switch, which selects which igniters are energized. In flight operation, both igniters are wired to be powered to maximize ignition reliability, so selecting the flight position energizes both igniters. Ground start mode uses a different path (typically one igniter) to conserve power and simplify ground operations, and continuous ignition is used to keep ignition available in conditions that might cause flameout. So, when the engine is already running at idle and you want both igniters energized, the appropriate position is flight.