Bloody April covers the pivotal air combat over Arras France from March to May, 1917.Single missions or multi day campaigns are possible. Eagle of Lille expands the area covered and the time period to1915 to the beginning of 1917.
Components for Bloody April include 4 and 1/2 counter sheets. One 22x34 map, 32 Areroplane data cards, plus Rulebook and Playbook
Eagle of Lille has 2 more countersheets and an 8X11 map.
This should satisfy your itch for WW1 air combat for a while.