the oversized aircraft proved to be so difficult to control that accurately hitting targets was extremely difficult. in addition, the engine proved to be unreliable, so that the operational strength of the squadron temporarily dropped to only twelve machines. the crews now often took with them another lewis machine gun and additional ammunition for defense, which further reduced the bomb load to 90 kg. only on the express command of the high command were further attacks by the squadron carried out. the last major attack was carried out on october 20, 1917. after that, more long-range missions due to the threat of german fighters and enemy anti-aircraft artillery was no longer possible. the remaining ps-7 gb.3 were replaced by january 1918 in the front line by sopwith 1½ strutter and breguet 14s and transferred to training units.