TA-26M is modified AE-310.
AG1 - cabin lights,
AG2 - cockpit lights,
AG3 - side lights,
AG4 - open/close gear bay doors,
AG5 - engine reverse thrust,
AG8 - Gyroscope and gear shocks

ALL INFORMATION BELOW IS FICTIONAL

TA-26M, or AE-310M2 is Quartirian long-haul aircraft, firstly produced in 2018 by Aerospace Airtrans. After Trosov-quartirian war new government decided to modify old aircraft to raise some money. TA-15 and AE-310 were modified too. Aircraft recieved new DB-40R engines instead of old DL-20M engines, absolutely new cockpit, new gear system and better aerodynamic scheme. Aircraft operated by Grossflight, HimAvia and Quartirian government. ILRut set the price at 16 million rubles - very profitable and cheap for this A330-200 competitor.