1. Switch 25mm cannons to 7.62, they are more accurate and can damage jet more.
2. Move! Don't let Jet line up with you. Change Altitude and direction when you see attacking jet. Use terrain to hide from Jet.
3. Use you base automated AA-turret. Spotted aircraft automaticaly targetter by it. If you can't deal with Jet yourself, retreat to base.
4. Igla launcher will give engineer more range than Stinger: 450m vs 350m.

Since you have SOFLAM, you also can try to use Laser-Guided Helicopter missiles. They can be launched on laser-designated jet. Try it.

1. Switch 25mm cannons to 7.62, they are more accurate and can damage jet more.
2. Move! Don't let Jet line up with you. Change altitude and direction when you see attacking jet. Use terrain to hide from Jet.
3. Use you base automated AA-turret. Spotted aircraft automaticaly targetter by it. If you can't deal with Jet yourself, retreat to base.
4. Igla launcher will give engineer more range than Stinger: 450m vs 350m.

Since you have SOFLAM, you also can try to use Laser-Guided Helicopter missiles. They can be launched on laser-designated jet. Try it.

Equip pilot as Support with Ammo squad upgrades. With 4 level squad perk it will resupply onboard engineers with rockets.

1. Switch 25mm cannons to 7.62, they are more accurate and can damage jet more.
2. Move! Don't let Jet line up with you. Change Altitude and direction when you see attacking jet. Use terrain to hide from Jet.
3. Use you base automated AA-turret. Spotted aircraft automaticaly targetter by it. If you can't deal with Jet yourself, retreat to base.
4. Igla launcher will give engineer more range than Stinger: 450m vs 350m.

1. Switch 25mm cannons to 7.62, they are more accurate and can damage jet more.
2. Move! Don't let Jet line up with you. Change Altitude and direction when you see attacking jet. Use terrain to hide from Jet.
3. Use you base automated AA-turret. Spotted aircraft automaticaly targetter by it. If you can't deal with Jet yourself, retreat to base.
4. Igla launcher will give engineer more range than Stinger: 450m vs 350m.

Since you have SOFLAM, you also can try to use Laser-Guided Helicopter missiles. They can be launched on laser-designated jet. Try it.