This appendix covers the following CLASSES of source software: Class I: Software which comprises all or part of a product which will be delivered to GE-A or a GE-A Customer. Class II software used to create/control/inspect/test characteristics on GE – Aviation product, that are validated by virtue of the software being under an approval and change control system. For both Class I and Class II software, the supplier is responsible for notifying GE-A of proprietary right claims, in writing, prior to execution of the Purchase Order.