the USSR's communication with the International Civil Aviation Organization in the development of aircraft type certification and noise regulation, especially for supersonic transport aeroplanes. As a member of investigation commissions, Mironov was closely involved in the investigation of aviation accidents, including the March 1968 MiG-15 training flight accident involving Yuri Gagarin and Vladimir Seryogin, the 1972 Il-62 airliner crash near Nerskoye Lake, and others. Regarding the MiG-15 training flight accident, Mironov developed and publicly supported a scientifically-grounded position against numerous different explanations and conspiracies. Mironov became the head of the GFRI's research division. He then worked as a deputy to , who was the institute's chief from 1969 to 1974. Later, Mironov became his first deputy after veteran Max Taitz. When Utkin died in 1981, Mironov became the institute's chief (1982), serving until was appointed in 1985. From 1981 to 1985, Mironov was a head of the Aerophysical and Flight Research Department within the Aeromechanics and Flight Engineering Faculty of the Moscow Institute of Physics and Technology. From 1996 to 2019, Mironov worked for the GFRI as a principal researcher in human factors and flight safety. Flight career Since childhood, Mironov was interested in aviation and aircraft modelling. While studying in the MAI, he completed the initial flight training course at MAI's aero-club with a U-2 pilot license. He later completed gliding flight training and made several parachute jumps. In a group of students visiting the GFRI, Mironov met with then-chief Mikhail Gromov and explained his plans to be a test pilot, to which Gromov responded, "Will see". Since his early days in the institute, Mironov was involved in aircraft flight testing as a test engineer, navigator, and transport pilot. On 4 October 1943, an accident occurred in the La-5 aircraft's test flight with Mironov in the flight crew—a mid-air collision with air defence patrol fighter Yak-1, whose pilot violated normal procedure flying too close to a test aeroplane. Mironov was severely wounded and spent five months in a hospital. Lasting issues in his left elbow hindered Mironov's ability to train and apply for a test pilot position. However, he passed the check flight with the institute's senior test pilot, proving he could fly light transport aeroplanes such as the Po-2. After the incident, Mironov frequently piloted aircraft, including the Po-2 and the Yakovlev UT-1. He completed hundreds of transport flights and obtained a USSR fourth class air transport pilot