Section 12(1) in The Assam Technical Education Service Rules, 1981
(1)Vacancies in the cadres of Professor, Joint Director, Principal, Polytechnic, Controller of Examination Assistant Professor, Head of Department Polytechnic Workshop Superintendent Engineering College of the service to the extent as specified in sub-rules (3) and (4)(c) of Rule 5 shall be filled by promotion in the manner prescribed hereinbelow :Provided that the Governor may, for good and sufficient reason, fill any of the posts for specialised investigation design and research work temporarily on deputation from outside the service, if it is satisfied that there is no suitable officer in the service available for filling the vacancy.
