What is a Manufacturer’s Serial Number (MSN)?
A Manufacturer’s Serial Number (MSN) is an exclusive and distinct alphanumeric code designated to an aircraft, commonly allocated before its fabrication. The MSN acts as the identification and reference number for all parts and components that constitute the airplane.
The MSN is typically issued by the manufacturer of the aircraft to permanently identify its individuality. It serves several important purposes, including tracking the airplane’s manufacturing history, assisting in maintenance routines, and facilitating traceability in case of any issues or incidents experienced by the aircraft. The MSN is engraved or stamped onto various parts, such as the fuselage and wings, and recorded in the documentation relevant to the airplane.
This unique identifier allows maintenance staff to track the service life of individual parts and to schedule preventative maintenance. It is also an important factor in the investigation of accidents and incidents. The MSN information is typically used to trace the origin of a component that may have caused or contributed to an accident, which aids in determining the cause of the event.
In summary, the MSN is a critical and integral component of an aircraft. It confers an exclusive identity to the airplane and is used for numerous essential tasks, including maintenance, tracking of parts, and safety investigation.
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