In many other cases where a PAR modification was
done, the WG has reaffirmed the CSD. This serves to indicate
that the WG believes that the modification to the PAR didn't
change the 5C.
Our Proceedure for PARs (LMSC OM 9) doesn't say anything
about PAR modification, but it does say in 9.2:
"PARs that which introduce no new functionality are exempt
from the requirement to provide a CSD statement."
The PAR modification proposed expands the scope of the PAR
(by increasing the range of the band it will cover). Therefore
it does change the functionality, perhaps in a small way but a
functionality change. Confirming the CSD would confirm that
the WG believes that this extension doesn't alter the
technical and economic feasibility of the project. It would be
consistent with the spirit of the text from 9.2 above - new
functionality requires a PAR.
Therefore, I think that the CSD should be included in the
When we did a PAR modification IEEE 802.1AS-Rev to add
maintenance items the WG and EC motions did not include the
CSD (though in an abundance of caution, the WG passed a
separate motion to confirm the CSD in case that became an
issue at the EC). Since maintenance PARs don't require CSD, it
was consistent to approve the addition of them to the scope of
the existing PAR without reaffirming the CSD.