10. Notwithstanding anything contained in this Ordinance, the Authority may undertake the execution of any scheme relating to civil aviation activity as framed or sponsored by any local or foreign body or agency or exercise technical supervision and administrative and financial control over the execution thereof on such terms and conditions as may be agreed to between the Authority and such body or agency: Provided that the Authority shall not undertake the execution of any scheme framed or sponsored by any foreign body or agency or exercise any technical supervision or administrative and financial control over the execution thereof without the prior approval of Government.