High Quality Content by WIKIPEDIA articles! The Consolidated C-87 Liberator Express was a transport derivative of the B-24 Liberator heavy bomber built during World War II for the United States Army Air Forces. A total of 287 C-87s were factory-built alongside the B-24 at the Consolidated Aircraft plant in Fort Worth, Texas. Converted former C-87s were the basis for a USAAF flight engineer trainer designated as the AT-22, a United States Navy VIP transport designated as the RY, and a Royal Air Force VIP transport designated as the Liberator C.IX.