Part Number 4521449001-804 Overlay Assy Copilot Outbd Switch in stock with ready to ship. Get an instant quote for Bombardier Aerospace part number 4521449001-804 by filling form below with your desired order quantity, targeted price and the expected order-fulfilment date. Get instant quote for 4521449001-804. Our dedicated account manager will get back to you within 15 minutes.