F9R was SpaceX’s Falcon reusable-development flight testbed, following Grasshopper in validating recovery hardware and guidance, navigation and control. The FAA’s 2014 McGregor assessment distinguishes its permitted programme from Grasshopper. A later NASA-hosted engineering review records five F9R development flights; planned operations in permit documents are not actual flight totals.
Future launches and major activity directly linked to this vehicle family.