META: Fan o' Planes
You need to get into contact with Ruby! Can you figure out their username? (Read the story here)
Let's go back and revisit those feeder puzzles! These schematics will provide you with the puzzle commonalities needed to group them into sets of three. Then maybe you'll be able to figure out why your answers sound all mixed up.
Schematic 1: 
Schematic 2: 
Schematic 3: 
(puzz.link link, with checking but without letters: here.)
Schematic 4: 
Schematic 5: 
Schematic 6: 
Schematic 7: 
