March 16, 2000
Hi John,
        I have enclosed a copy of the variance analysis you requested. One caveat
is that the only thing I can readily do is to provide the baseline cost
estimate from the PMP Ver 1.3 (June 17, 1998) in FY95$, and the current cost
estimate in essentially Then Year $. So in principle this is an issue of
comparing apples to oranges. However, my understanding is that (1) the
subsystem managers are not addressing/justifying in any detail these
variances, so great precision is not needed, and (2) its only purpose is to
"guide" the scrubbers. So, while you cannot do a detailed $ comparison, it
will serve its purpose.
        The general trend is what we had talked about in the PMG. When you include
the contingency we had estimated at the time, then the variance indicates
that the silicon dominates (+$2.4M), the Fiber tracker is actually saving
(-$1.1M), which offsets the overrun in Tracking Electronics (+$1.2M). The
other systems have significantly smaller +/- variances.
        

Mike