This excerpt taken from the PCG 10-K filed Feb 18, 2005.
6. MAINTENANCE RECORD KEEPING AND REPORTING
The four elements of the ISO's requirements for Maintenance record keeping and reporting are as follows:
In addition, the Maintenance Coordination Committee shall annually review the requirements of this section of the ISO Maintenance Standards and shall seek to standardize reasonable record keeping, reporting and information-sharing requirements sufficient to support ISO regulatory reporting needs.