XAM2175 wrote:It's an acronym for Manufacturer's Serial Number.
My understanding is that Airbus allocate them to all aircraft ordered within a family (so there is an A320 with MSN 001, an A330 with MSN 001, and so on), but do not re-use or reallocate them if that aircraft is subsequently not built.
Boeing's system is slightly different as the "Serial Number" is comprised of two components, the Constructor's Number that is unique for each and every Boeing aircraft, and the Line Number that is similar to the Airbus MSN system.
LH707330 wrote:XAM2175 wrote:Airbus allocate them to all aircraft ordered within a family
They shared a line and construction numbers.
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