Photo by © Aviation of Russia
In August, two prototype aircraft MC-21 73053 and 73054 performed flights to test a new version of the automatic control system software and integrated control system in order to extend the type certificate in the future to provide landing under ICAO Category III.
In Irkutsk on August 23, a series of flights of 73057 began on the program of determining the characteristics of fuel consumption of the aircraft with a wing made of domestic PCM.
As explained in the Yakovlev Design Bureau, these flights are performed for the subsequent comparison of the characteristics of the serial aircraft after the planned replacement of engines with domestic ones. At present, the 73057 aircraft is equipped with PW1400G TPDs.
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