What happens in a jet transport airplane when the fire-pull T-handle for an engine is pulled?

• A. The compressor bleed air valve is closed.
• B. The engine fuel shutoff valve is closed, and the generator field relay is tripped.
• C. The hydraulic supply shutoff valve is closed.
• D. The anti-ice valve is closed.

Answer: (B)

When a fire is detected in an engine, pulling the T-handle aims to quickly isolate the engine from both fuel and electrical power to stop the fire from feeding or igniting further. The engine fuel shutoff valve closes, cutting off all fuel to the engine. At the same time, the generator field relay is tripped, disconnecting the engine-driven generator from the aircraft electrical system. This combination minimizes ignition sources and helps contain the fire. Other valves like bleed air, hydraulic, or anti-ice aren’t the primary actions triggered by the fire handle in this scenario.