On September 2, the engines of Soyuz 29 were tested, 25 experiment containers with 100 experimental results were transferred, along with exposed film, and seat liners and centering weights were exchanged.
9月2日にソユーズ29号のエンジンが試験され、感光フィルムとともに100の実験結果を納めた25の実験容器が移され、その後座席が交換された。