Gene Cash wrote in :

Chris Bennetts writes:

It makes you wonder what other long-term dormant systems no longer
work. The failure of P6's array extension/retraction system would be
extremely bad, for example.

Why would that be? I can't think of any reason to need to retract the
arrays, or how it could become a problem.

P6 was originally intended to be installed at the far port end of the
truss. To provide more power for the US segment during the assembly
sequence, the sequence was modified to launch P6 early and mount it to the
Z1 truss at the center of the station.

Once assembly of the truss resumes, the P6 arrays would interfere with the
rotation of the arrays on the P3/P4 and S3/S4 truss segments, so the arrays
must be retracted until P6 can be relocated to its permanent position on
the port end, then re-extended.

--
JRF

Reply-to address spam-proofed - to reply by E-mail,
check "Organization" (I am not assimilated) and
think one step ahead of IBM.