Inspector reported failure to comply with EA and AD Task Card instructions regarding the cleaning; inspection and lubrication of the Horizontal Jack Screw Assembly. The EA and AD Task Cards were singed off by Manager of Inspection and the Day Shift Lead Inspector; releasing the aircraft for service.

Narrative

After looking at the Horizontal Stabilizer Jack Screw; I saw fresh grease had been applied on the whole screw section and ball joint/pivot areas.When returning to the office; I relayed what I had seen to the other Inspector assigned with me to the north hanger aircraft that night. Afterwards the Technician opened the door and asked what we wanted. I asked if the Technician had greased the screw and the other components. The reply was yes. I then asked if all the steps were worked including the inspection steps the answer was again yes.We then informed the Technician that the work card XXXXX-XXXXX had Tech/Inspection steps that Inspection was to be present as all the steps were being performed; also this work card was AD driven.We then informed the Technician to go inform their Lead and/or Supervisor that we cannot sign the Work card because the AD had been deviated from; the Technician also had not signed off any of the steps at this time.Afterwards the other Inspector informed our immediate Supervisor On Duty of the situation. After some time; our Supervisor had informed us that a log page had been initiated to replace the Horizontal Stabilizer Jack Screw; ref. LP#XXXXXXX. That was also approved by Maintenance Control by the end of our shift.Upon returning to work after my days off I had been informed the aircraft Horizontal Stabilizer Jack Screw had been reworked and the EA log page was signed off by the Manager of Inspection; and a Lead on day shift that same morning thereby releasing the aircraft for service.