Mission 9 - Sand Castle
Collectible #45 - Postcard
After landing your VTOL for the first time, hop off your plane and head towards a multi-storey cabin directly ahead of you (it has the words ‘Pivot controls’ written on the outside). Go up one flight of stairs and enter the cabin. A Postcard can be found on the shelf to your immediate left.
Collectible #46 - Industrial Drillbit Parts
Land your VTOL a second time, leap off and move off the landing pad. Take a left and you’ll see some Industrial Drillbit Parts on the floor. Grab them to complete the collectibles for Sand Castle.