If the oil pressure gauge is inoperative during the engine run-up, what should you do?

When the oil pressure gauge is inoperative during the engine run-up, it is crucial to ensure the safe operation of the aircraft. The oil pressure gauge is a critical engine instrument, as it provides vital information about the oil lubrication system, which is essential for proper engine function and longevity. An inoperative oil pressure gauge could indicate a malfunction that might lead to engine failure if the oil pressure is insufficient.

Without this critical information, a pilot cannot accurately assess whether the engine is operating within safe parameters. Therefore, it is prudent not to depart when an essential engine instrument is not functioning. Taking off without knowing the oil pressure increases the risk of engine issues that could compromise safety during the flight.

While checking fuel levels and waiting for the gauge to function might be valuable, they do not address the immediate risk posed by the inoperative oil pressure gauge, making it necessary to refrain from taking off until all critical instruments are operational. Prioritizing flight safety in this manner is fundamental in aviation operations.