A former navigator of the 91st BG, Marion Havelaar, reported in his history of the group that Nine-O-Nine completed either 126 or 132 consecutive missions without aborting for mechanical reasons, also believed to be a record. M/Sgt. Rollin L. Davis, maintenance line chief of the bomber, received the Bronze Star for his role in achieving the record. Flying her first combat mission on February 25, 1944, to Augsburg, Germany, she made 18 trips to Berlin, dropped 562,000 pounds of bombs, and flew 1,129 hours. She had 21 engine changes, four wing panel changes, 15 main gas tank changes, and 18 changes of Tokyo tanks (long-range fuel tanks).
After the end of hostilities in Europe, Nine-O-Nine was returned to the United States on June 8, 1945, and was consigned after the war to the RFC facility at Kingman, Arizona on December 7, 1945, and eventually scrapped.
B-17G-85-DL, 44-83575, civil register N93012, owned and flown by The Collings Foundation, Stow, Massachusetts, currently appears at airshows marked as the historic Nine-O-Nine.
In August of 1987, the Nine-O-Nine ran off the runway at Beaver County Airport in Beaver Falls, Pennsylvania during an airshow and was severely damaged. It has since been repaired and continues to fly at shows.