Date: Monday, October 20, 1997 // MD 76/25
Mir Station System/Subsystem Activities
The second IVA into Spektr was conducted today, and the crew connected two of the three cables for the solar array orientation system to the hermaplate on the hatch. They were unable to make one of the connections due to difficulties with access, so one of the three undamaged arrays will not be steerable. The MOST is attempting to find out which one this is, but it is believed to be the array opposite the damaged array. The current plan is to make the connection to the Kristall avionics on Wednesday, the 22nd.
Mr. Blagov told us that they do not yet know the cause of the failure to depressurize the Progress vestibule on Saturday. They suspect that a limit switch was not making contact, preventing the supply of power to the valve. However, the depressurization worked fine on Sunday. He said that the crew will take a closer look for causes when they reopen Progress.