For its day, the Intruder had surprisingly sophisticated avionics (electronics systems), with a high degree of integration.

It was intended as a direct competitor for the large United States fourth generation fighters, with long 3,530 km range, heavy armament, sophisticated avionics and high agility.

The Trident had a complex, sophisticated and comprehensive avionics fit which was successful in service.

In addition, a highly sophisticated avionics, radar, EW and self-protection suite was installed, necessitating a lengthening of the nose.

The light attack version of the Yak-32 was designated as Yak-32Sh, and was planned to include more sophisticated avionics than the Yak-32.

Installation of electrical systems on 120s that were not originally so equipped, allowing owners to install an electric starter, more sophisticated avionics and/or lights for night flying.

The aircraft featured some extremely sophisticated avionics for navigation and mission delivery, which would also prove to be one of the reasons for the spiralling costs of the project.

It also enables other aircraft with less sophisticated avionics, such as MiG-25, to be directed to targets spotted by MiG-31.

Fourth-generation fighters continued the trend towards multirole configurations, and were equipped with increasingly sophisticated avionics and weapon systems.