In-game X-ray is showing it uses AN/APG 63 PSP and has TWS.
But it can’t be used.

Is it some text bug or what?
It’s shown as TWS on the xray but its actually RAM (Raid Assessment Mode).
You switch to it using the Change Radar/IRST search mode control when hard locking an enemy and it moves the lock beam so you can see whats around the target you are locking.
This is the normal target lock
This is the “TWS” RAM mode.
Its not a true TWS though and you cannot fire SARH missiles with it, you still need to return to the normal lock mode.