71.   The three companies described the recall as a preventive measure and said the defective part would be replaced free of charge.

72.   Component manufacturers are also starting to look at the market for spare parts and for the time when technology transfer and local manufacturing allows Vietnam to replace imported parts.

73.   The space center said the repair team replaced damaged parts and reported no damage to the structure of the station itself.

74.   The astronauts replaced internal parts of the telescope that help computers talk to each other, record science data and move the telescope around.