2. The brief facts of the case are that the respondent Nos.1 & 2/applicants were initially appointed as Lecturers in Mechanical Engineering on 19.04.1991 through Andhra Pradesh Public Service Commission in Zone-III. Subsequently, they were promoted as Senior Lecturers on 10.09.2001 and 12.09.2001 respectively. They are fully eligible and qualified to be promoted to the post of Head of Section in Mechanical Engineering, but, they were not promoted to the said post. However, the unofficial respondents, who are juniors to them, were promoted to the said post. Aggrieved by the action of the official respondents/ petitioners, the applicants filed the Original Application seeking a direction to review all further promotions given to the unofficial respondents and others in the category of Senior Lecturer and Head of Sections in Mechanical Engineering as per the seniority list of Lecturers dated 13.05.2011, by setting aside the impugned G.O.Ms.No.110, Higher Education, (TE.I) Department, dated 05.09.2011.