to earth immediately after release by a tow airplane over Lambert Field, St. Louis, Missouri, USA. Several thousand spectators had gathered for the first public demonstration of the St. Louis-built glider, which was flown by 2 USAAF crewmen and carried St. Louis mayor William D. Becker, Robertson Aircraft co-founder Maj. William B. Robertson, and 6 other VIP passengers; all 10 occupants perished in the crash. The accident was attributed to the failure of a defective wing strut fitting that had been provided by a subcontractor; the post-crash investigation indicted Robertson Aircraft for lax quality control; several inspectors were relieved of duty. Surviving aircraft 42-43809 – On display at the Museum of Army Flying in Middle Wallop, Hampshire. 45-13696 – CG-4A under restoration at the Yanks Air Museum in Chino, California. 45-14647 – Cockpit section on static display at the Pima Air & Space Museum in Tucson, Arizona. 45-15009 – CG-4A on static display at the Air Mobility Command Museum at Dover Air Force Base near Dover, Delaware. 45-15574 – On static display at the Cradle of Aviation Museum in Garden City, New York. 45-15691 – On display at the Silent Wings Museum in Lubbock, Texas. 45-15965 – On display at the Kalamazoo Air Zoo in Portage, Michigan. It is painted as 42–46574. 45-17241 – On static display at the Airborne Museum in Sainte-Mère-Église, Normandy. 45-27948 – CG-4A on static display at the National Museum of the United States Air Force in Dayton, Ohio. Replica – On display at the Fagen Fighters World War II Museum in Granite Falls, Minnesota. Replica – On display at The Fighting Falcon Museum in Greenville, Michigan. Unknown – On display at the Menominee Range Historical Foundation in Iron Mountain, Michigan. Unknown – CG-4A on display at the National Soaring Museum in Elmira, New York. Unknown – Cockpit section on display at the Travis Air Force Base Heritage Center in Fairfield, California. CG-4A on display at the Silent Wings Museum in Lubbock, Texas. Unknown – CG-4A on display at the Don F. Pratt Memorial Museum at Fort Campbell near Clarksville, Tennessee. Unknown – CG-4A on static display at the Yorkshire Air Museum in Elvington, Yorkshire. Unknown – On display at the Assault Glider Trust in Shawbury, Shropshire. Unknown – On static display at the Airborne & Special Operations Museum in Fayetteville, North Carolina. Unknown – On static display during restoration at the U.S. Veterans Memorial Museum