71.   But they ended up spending an extra month at the space station because of problems with the newly installed robot arm.

72.   Canada also built the robot arm.

73.   Computer problems aboard the station have kept Endeavour at the station longer than expected by preventing astronauts from wrapping up work with a critical robot arm.

74.   Computer problems have kept the Endeavour at the station longer than expected as astronauts try to carry out operations of a critical robot arm.

75.   Computer problems aboard the station have kept Endeavour there longer than expected by preventing astronauts from wrapping up work with a critical robot arm.

76.   Currie positioned the solar-winged Zarya, still on the end of the shuttle robot arm, several inches directly above Unity.

77.   Computer problems were forcing astronauts to put off operations of a critical robot arm.

78.   During a spacewalk on Sunday, Parazynski and Hadfield installed the robot arm on a temporary mount on space station Alpha.

79.   During the final portion of the spacewalk, Foale and Harris were to be positioned away from the shuttle on the end of the robot arm.

80.   During the first portion of the spacewalk, Foale and Harris were to be positioned away from the shuttle on the end of the robot arm.