STS-120 ISS Repair
During STS-120 the OBSS was used as an extension boom for the space station's Canadarm2, something it was never designed to do. During this mission the P6 solar array had become damaged during the redeploy. Canadarm2 grabbed the arm on its center grapple fixture and then astronaut Scott E. Parazynski was mounted at the end of the boom to make the repair. Because Canadarm2 is unable to power the OBSS it was without power many hours more than it was designed to handle, but because it was heated up considerably before the start of the repair it stayed undamaged.
Read more about this topic: Orbiter Boom Sensor System
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