After three consecutive failed starts, what must be secured before attempting a fourth start?

After three consecutive failed starts, what must be secured before attempting a fourth start?

• A. FCS and Boost Pumps
• B. Battery and Alternator
• C. Hydraulic Pumps
• D. Fuel Valves

Answer: (A)

When a helicopter fails to start after multiple attempts, the immediate precaution is to secure the fuel system components that could feed the engine during a restart. Securing the fuel control system and the boost pumps isolates the engine’s fuel supply, preventing unmetered fuel flow or pressure issues that could lead to a fuel-rich condition, flooding, or a post-start fire while you reassess the situation and check for faults. The fuel control system meters fuel to the engine, and the boost pumps provide the necessary pressure to deliver that fuel during starting. Electrical power, hydraulics, or simply closing other valves do not address this restart-specific risk in the same direct way, so the procedure focuses on these two fuel-related components before attempting a fourth start.

When a helicopter fails to start after multiple attempts, the immediate precaution is to secure the fuel system components that could feed the engine during a restart. Securing the fuel control system and the boost pumps isolates the engine’s fuel supply, preventing unmetered fuel flow or pressure issues that could lead to a fuel-rich condition, flooding, or a post-start fire while you reassess the situation and check for faults. The fuel control system meters fuel to the engine, and the boost pumps provide the necessary pressure to deliver that fuel during starting. Electrical power, hydraulics, or simply closing other valves do not address this restart-specific risk in the same direct way, so the procedure focuses on these two fuel-related components before attempting a fourth start.