группа): Founded 9 August 1916 on the Southwestern Front; contained: 2nd Corps Aviation Detachment (2-й корпусной авіаціонный отрядъ) 4th Corps Aviation Detachment (4-й корпусной авіаціонный отрядъ) 19th Corps Aviation Detachment (19-й корпусной авіаціонный отрядъ) 2nd Battle Aviation Group (2-я боевая авіаціонная группа): Founded April 1917 on Southwestern Front to support XI Army; contained: 3rd Corps Aviation Detachment (3-й корпусной авіаціонный отрядъ) 4th Corps Aviation Detachment (4-й корпусной авіаціонный отрядъ) 8th Corps Aviation Detachment (8-й корпусной авіаціонный отрядъ) 3rd Battle Aviation Group (3-я боевая авіаціонная группа): Founded April 1917 on Russian Empire's Western Front; contained: 1st Corps Aviation Detachment (1-й корпусной авіаціонный отрядъ) 11th Corps Aviation Detachment (11-й корпусной авіаціонный отрядъ) 22nd Corps Aviation Detachment (22-й корпусной авіаціонный отрядъ) 4th Battle Aviation Group (4-я боевая авіаціонная группа): Founded June 1917 on Northern Front; contained: 5th Fighter Aviation Detachment (5-й авіаціонный отрядъ истребителей) 13th Fighter Aviation Detachment (13-й авіаціонный отрядъ истребителей) 14th Fighter Aviation Detachment (14-й авіаціонный отрядъ истребителей) 15th Fighter Aviation Detachment (15-й авіаціонный отрядъ истребителей) 5th Battle Aviation Group (5-я боевая авіаціонная группа): Proposed in August 1917, but never formed; to contain 2nd Fighter Aviation Detachment (2-й авіаціонный отрядъ истребителей) 6th Fighter Aviation Detachment (6-й авіаціонный отрядъ истребителей) 7th Fighter Aviation Detachment (7-й авіаціонный отрядъ истребителей) Production problems In spite of Russia's need for airframes and engines, only about 5,600 aeroplanes were built in Russia before October 1917. Much of this was due to the fact that Russian industry could not keep pace with demand. Imperial Russia did not possess the manufacturing capacity to produce engines and airframes in the numbers needed. Thus, the Czarist government relied heavily on imported engines and airframes from France and Britain. Russia's aircraft production slightly outpaced her Austrian opponent, who stayed in the war one year longer, produced about 5,000 aircraft and 4,000 engines between 1914 and 1918. Of course, the output of Russia and Austria-Hungary pale in comparison to the 20,000 aircraft and 38,000 engines produced by Italy and the more than 45,000 aircraft produced in Germany. Maintenance problems In addition to construction problems the Imperial Russian Air Service faced great difficulties in keeping the aircraft they did have in the air. Because it was so difficult to get new machines in a timely manner and because the Russians faced a shortage of aircraft for such a large front, the Russian high command kept out of date aircraft flying as long as possible.