Which action best supports preventing surge during start?

• A. Open all fuel valves and advance to max rpm.
• B. Maintain appropriate fuel flow and monitor EGT and N1/N2 during spool.
• C. Shut down immediately after start.
• D. Ignore oil pressure readings.

Answer: (B)

During start, surge happens when the air flow through the compressor can’t support the fuel being burned as the engine spools up. The most effective way to prevent that is to keep fuel delivery in step with the increasing air flow and watch how the engine is responding. Maintaining appropriate fuel flow while monitoring the exhaust gas temperature and the N1/N2 spool speeds as the compressor accelerates lets you keep the surge risk in check and ensures the engine comes up smoothly to stable operation.

Opening all fuel valves and advancing to max rpm pushes fuel into a still-increasing airflow, which can trigger surge. Shutting down immediately after start or ignoring oil pressure readings doesn’t address surge and is unsafe, so they’re not appropriate responses.