Moscow, Jan 12 (Reporter) Restrictions on the arrival and departure of aircraft have been lifted at the airports of Nizhnekamsk and Ufa, Russian air transport agency Rosaviatsia said on Saturday. "At the airports of Nizhnekamsk (Begishevo) and Ufa, restrictions on the arrival and departure of aircraft were lifted at 21:00 Moscow time [18:00 GMT]," Rosaviatsia said in a statement. The temporary restrictions were introduced to ensure the safety of civil aircraft flights...////...