91.   Growth in engines, power generation units and compact machinery sales will be key to reaching the goal, Barton said.

92.   He said the crew started smelling fumes after turning on an auxiliary power unit.

93.   Meanwhile, coal supplies are dwindling and a power plant may have to soon shut down another power unit, Interfax said.

94.   NASA ultimately decided the risk of surgery was less than the danger that the malfunctioning power unit would cripple Hubble.

95.   NASA held off powering down Hubble until Grunsfeld and Richard Linnehan were ready to start disconnecting the old power control unit, an hour into their spacewalk.

96.   One of three hydraulic power units had overheated, and the pilots switched to a backup.

97.   On Tuesday, spacewalkers James Newman and Michael Massimino loosened bolts on the doors leading to the power control unit and batteries.

98.   One of three hydraulic power units had overheated, and the pilots switched to a backup circuit.

99.   One of three hydraulic power units overheated, and the pilots switched to a backup controller to cool it before shutting down each unit as planned.

100.   The bellcranks, attached to a hydraulic power control unit, help move the elevators at the rear of the plane.