NEW YORK–(BUSINESS WIRE)–Kroll Bond Rating Agency (KBRA) assigns preliminary ratings to two series of notes (the “Notes”) issued by Willis Engine Structured Trust IV (“WEST IV” or the “Issuer”). WEST IV represents Willis Lease Finance Corporation’s (“Willis”, the “Servicer” or the “Company”) fifth securitization and the second rated by KBRA. KBRA notes that Willis will be retaining the equity in WEST IV and have also retained the equity in its previous securitizations. Proceeds from the Notes