When should preventive maintenance daily (PMD) be performed?

Preventive maintenance daily (PMD) should be performed after the last flight or before the first flight of the mission day to ensure that the aircraft is in optimal working condition. This timing allows for a systematic check of the aircraft's systems, ensuring any issues are identified and addressed prior to missions, thus enhancing safety and operational effectiveness. Performing PMD in this manner also helps to ensure compliance with maintenance schedules and standards, contributing to the overall reliability of flight operations.

This approach maximizes the readiness of the aircraft, as it provides an opportunity to inspect any wear or damage that may have occurred during the previous flight or to prepare adequately before the next operational flight, helping to prevent potential malfunctions during critical missions.