Part Number 121-9799-01-02-03 Protector Altimeter Radio in stock with ready to ship. Get an instant quote for Embraer Aircraft part number 121-9799-01-02-03 by filling form below with your desired order quantity, targeted price and the expected order-fulfilment date. Get instant quote for 121-9799-01-02-03. Our dedicated account manager will get back to you within 15 minutes.