General Authority of Civil Aviation (GACA) Aeronautical Information Publication (AIP) Practice Exam

Monitoring evidence during the exterior check of the engines is crucial for ensuring the safety and proper functioning of the aircraft. Each of the listed items provides key insights into the engine's operational status.

Fluid leaks are critical to check because they can indicate a failure in the fuel, oil, or hydraulic systems. Identifying any fluid leaks early can prevent more significant issues or failures during flight and ensures the integrity of the engine components.

Unsecured panels are another essential aspect to monitor. They can represent a risk if not properly fastened, as they may lead to airflow disruption or even detachment during operation, which can compromise safety or lead to catastrophic failure.

Blocked exhaust can severely affect engine performance and may indicate underlying issues such as debris accumulation or component malfunction. Proper exhaust flow is vital to maintain efficient engine operation and prevent overheating or backpressure situations.

Recognizing all these elements as evidence to monitor provides a comprehensive safety and operational check. Each aspect contributes to the overall assessment of the engine's condition, emphasizing the importance of thorough pre-flight inspections. Therefore, the answer encompassing all these considerations prepares personnel to ensure the aircraft is airworthy and safe for operation.