What is required before any maintenance procedure following an overspeed incident?

Consultation of the maintenance manual is crucial before any maintenance procedure after an overspeed incident because the manual provides specific guidance tailored to the engine type and model affected. It details the necessary steps for inspection and repair processes, outlines the potential damage that might result from an overspeed, and instructs on any required inspections and measurements to evaluate the engine's condition thoroughly.

This step ensures that technicians perform the correct procedures based on manufacturer recommendations, which may involve checks on components like the governor, fuel control systems, or other related parts that might have been affected by the overspeed. Following these guidelines helps maintain safety and reliability, preventing further issues that could arise from inadequate maintenance or oversight.