Dassault Mystere IVN AIDA and Aladine

I find hire very interest pictures and drawings about this aircraft,does any have information about first flight or flight testing

If I'm not mistaken, we have the (sole) Mystere IVN prototype at the CAEA - watch my signature, enjoy the website, and don't hesitate if you ever tour South-west france and Bordeaux.
The CAEA collection is well worth a visit, although the actual situation is quite difficult... if not dire. Military people are, hmm, uncooperative. :

The CAEA machine has a plain rounded nose, not the pointy thing show by the scheme - which should represent the operational variant that never was.

The Mystere IVN was build as a two seat all weather fighter - the third prototype in a row, since Ouragan and Mystere II had already been similarly modified - solid nose, lateral intakes.

Just like the other two, it was underpowered, and the all weather role ultimately fell to F-86D Sabre Dogs (yes, France used the type, although briefly), the Vautour IIN, and later the Mirage IIIC.

Jacqueline Auriol bet a speed record with the prototype, a good 1151 km per hour.

Later it was used as testbed for ejection seats... and possibly radars.
AIDA and ALADIN were quite basic radar sets to be fitted to day / lightweight fighters like the early Mirage I and II, and the varied Etendards. The french navy Etendard IV also featured the AIDA.

Aviafrance has some more details on the type; first flight is given as July, 19 1954.

http://www.aviafrance.com/aviafrance1.php?ID=1016&ID_CONSTRUCTEUR=396&ANNEE=0&ID_MISSION=0&MOTCLEF=