Russia is planning to sign in December an agreement with India on the preliminary design of a joint fifth-generation fighter aircraft, a senior Russian aircraft industry official said on Wednesday. Russian Sukhoi holding and Indian Hindustan Aeronautics Limited (HAL) agreed in early 2010 to jointly develop a fifth-generation fighter jet, tentatively dubbed PAK FA. "An agreement with India on the pre-design of the PAK FA will be signed in December," said Alexei Fyodorov, head of Russia's United Aircraft Corporation. The sides agreed to develop both a single-seat and a two-seat version of the aircraft by 2016, focusing on the single-seat...