During a wet start on the ground with no EGT rise, what does the EEC do after 15 seconds?

During a wet start on the ground with no EGT rise, what does the EEC do after 15 seconds?

• A. Shuts off fuel and ignition.
• B. Enriches fuel flow for a hot start.
• C. Maintains current fuel/ignition settings.
• D. Initiates reverse thrust.

Answer: (A)

During a ground start, the EEC watches for evidence of ignition by monitoring EGT. If, after about 15 seconds, there is no EGT rise, it means combustion hasn’t started. To prevent unburned fuel from flowing and flooding the combustor or causing damage, the EEC automatically cuts off both fuel and ignition. This aborts the start and prepares the system for a fresh attempt after conditions are cleared. Enriching fuel for a hot start isn’t appropriate here because there’s no combustion to begin with, maintaining the current settings would leave the engine in a non-ignited state, and reverse thrust is irrelevant during a start.

During a ground start, the EEC watches for evidence of ignition by monitoring EGT. If, after about 15 seconds, there is no EGT rise, it means combustion hasn’t started. To prevent unburned fuel from flowing and flooding the combustor or causing damage, the EEC automatically cuts off both fuel and ignition. This aborts the start and prepares the system for a fresh attempt after conditions are cleared. Enriching fuel for a hot start isn’t appropriate here because there’s no combustion to begin with, maintaining the current settings would leave the engine in a non-ignited state, and reverse thrust is irrelevant during a start.