Part Number ST1003-1003-20R-54 Airstair in stock with ready to ship. Get an instant quote for Hawker Beechcraft part number ST1003-1003-20R-54 by filling form below with your desired order quantity, targeted price and the expected order-fulfilment date. Get instant quote for ST1003-1003-20R-54. Our dedicated account manager will get back to you within 15 minutes.