Where should the engine operating time be recorded at the last oil change?

• A. OIL SAMPLES (x)
• B. ENGINE TIME and CYCLES
• C. BLOCK A, AEROSPACE INSPECTION STATUS
• D. OIL ADDED

Answer: (B)

The engine operating time should be recorded in the section designated for recording engine time and cycles. This area is specifically intended to keep track of the total operating hours of the engine, which is crucial for maintenance scheduling, compliance with airworthiness directives, and track the engine's performance over time.

Recording the engine time at the last oil change is important because it provides a reliable reference point for future maintenance actions and helps in monitoring the overall health of the engine. Additionally, it ensures that maintenance personnel can accurately assess whether the engine has surpassed any critical operating thresholds that might necessitate more comprehensive inspections or service actions.

The other options serve different purposes. For example, the section for oil samples pertains to recording specifics about the oil analysis, while the aerospace inspection status block is focused on documenting the outcomes of inspections. The oil added section captures the amount of oil introduced to the engine but does not track operational metrics like engine hours, making the latter option the most appropriate for this context.