Carry On Bags: Yes (Special Instructions)
Checked Bags: Yes (Special Instructions)

Check with your airline prior to your flight to ensure your instrument meets the aircraft size requirements. Musical instruments must undergo screening when transported as carry-on or in checked bags. Musical instruments transported as carry-on require a physical inspection at the security checkpoint. Inform the TSA officer if your instrument requires special care and handling. Pack brass instruments in your checked bags.

 The final decision rests with the TSA officer on whether an item is allowed through the checkpoint.