JEDDAH, 19 April  — Prince Sultan, second deputy premier and minister of defense and aviation, signed yesterday two contracts with two national companies for building a new airport in Dawadmi and expanding the Jizan airport. The contract for the Dawadmi airport is worth SR141,930,724 and the Jizan project will be implemented at a total cost of SR122,305,052, said Ali Al-Khalaf, president of the Civil Aviation Authority. The two airports will be equipped with the most advanced facilities.