Lately I'm playing on Silk Road often, with 2-3 friends.
We often play as Little-Bird squad and perform well in general.

A Little bird (Headseeker, 30mm, flares or ECM) with 2 repairman( RPG-7, repair-tool / Stinger, repair-tool)

However, when it comes to JET pilots which are at least a little above average on skill, we fail all the times.

If the jet has used flares and is in range, we instantly get him down (2 headseaker + 1 stinger).

What strategies can we use to get them jets down, when jet uses hit and run tactic, most times with flares not ECM?
Sometimes we have a engineer-player inside a Tank or LAV on the ground to (RPG / Repair-Tool), if this could become a factor.
Stressing the jet with LMG from vehicle isn't much of a help, due we have to be nearby the vehicle all the time, which would lower our effectiveness.

We've tried a lot, best strategies until now is the following:
Engie on the ground uses SOFLAM as secondary weapon on gunner slot.
He can provoke the jets to flare, sometimes but not very often.  

But this has big problems:  

 - We have to stay relatively close to ground personal
 - Ground personal could be in a separate fight which we could not end fast. Any inf coming toward our ground personal isn't a problem due we kill it fast, but tanks take time.
 - Jets still can escape
 - Ground personal takes some time to switch slot
 - Ground personal is completely immobile and relatively vulnerable while using SOFLAM