Look at this about PAF Dassult Falcon 20 from Wiki:
Operated by No. 24 Blinders Squadron which was revived in 1987 following induction of DA-20. Participated during PAF exercises in both airborne early warning and ECM roles.[88][89] First participated in a PAF exercise, in the ESM and ECM role, during Exercise High Mark 89 (14 November to 23 December 1989).[90] Also used for ESM/ECM support during Saffron Bandit exercises of 1992, 1994, 1997 and 1999.[91]
Third aircraft delivered March 2008. Original two aircraft flown to France for upgrade and structural overhaul during 2004-2007,which they never returned because pakistan didn't wanted to pay for it.