If the dimensions or weight of a musical instrument exceeds the established norms of hand luggage, then the instrument must be checked in.
If the fare of the purchased ticket involves the carriage of luggage, then simply hand over the tool to the luggage compartment at the check-in desk at the airport. If baggage is not provided in the fare, then it must be paid additionally at the time of ticket purchase or at the airport.
The instruments usually flying in the luggage compartment include: guitar, synthesizer, cello, harp, double bass, accordion, trombone, etc.
The tool is accepted in the luggage only in a protective case. This is necessary so that you receive the instrument at the arrival airport without a single scratch.