According to open source information, the companies expected to take part in the TFX project and their fields of activity:
TURKISH AEROSPACE
Design, structural parts, assembly, testing, qualification and mass production
Fly by wire flight control system (FBW)
ASELSAN
Integrated radio frequency system (Radar+EW)
Integrated electro-optical system
Helmet integrated control system
IFF system
Avionics
Radar absorber material (RAM)
TR MOTOR and TEI
Auxiliary power unit (APU)
Air turbine start system (ATSS)
x35000 lbf turbofan engine (contracted in 2018, engine expected in 2028)
HAVELSAN
Integrated communication navigation identification system
Logistics information system
Ground mission planning system
Cybersecurity
CBRN threat detection
Digital twin
Simulator
TUBITAK BILGEM
Mission computer
Real time operating system
Radar cross section test facility
HIZAL
Lightning test facility
ROKETSAN AND SAGE
Ammunition and missiles
TAAC
Landing gear
Flight control actuators
Weapon bay door actuators
Iron bird
TASECS
Air conditioning and cabin pressure control system
PAVOTEK
Power distribution system
METEKSAN
Tactical data link
Radar altimeter
SDT
Intra-flight data link (IFDL)
STG
Avionics display
BIOSYS
Built-in continuous oxygen production system
VOLO COMPOSITE
Canopy and some composite parts
BILKENT UNAM
Canopy coating
Avionics display technology
NUROL CAS
Fuel systems systems engineering support
Avionics systems expert engineering support
PETLAS
Tires