What does "MMO" refer to in aircraft maintenance?

In aircraft maintenance, "MMO" refers to the Maintenance Management Office. This office plays a crucial role in overseeing and managing maintenance activities to ensure that aircraft are kept in a safe and operational state. The MMO is responsible for coordinating maintenance schedules, tracking maintenance records, and ensuring compliance with regulatory requirements and safety standards.

The role of the Maintenance Management Office is critical in optimizing maintenance operations and improving the overall efficiency of maintenance procedures. By effectively managing the maintenance processes, the MMO helps in minimizing aircraft downtime and ensuring that maintenance personnel have the resources they need to perform their tasks effectively.

In summary, the Maintenance Management Office is vital for maintaining high standards in aviation safety and operational readiness, making it the correct answer in this context.