In order to unlock this airship, you need to find its pieces first. There are 5 in total. You have to find it yourself within these areas.
1. 2 pieces at the Brink Island
1 above a tree, 1 beneath a building
2. 1 piece at Far Drop
behind the Phantom Blade there is a weird stuff with pillars. Find it around there. You can also find an Eco crystal above it on a rock.
3. 1 piece at Sector Zero
Can't remember the place but you will eventually find it.
4. 1 piece at the Aeropan Barracks
Near the hangar (or landing area with the ship icon on the map)
Note: Most of the pieces are close but a bit far away from the Phantom Blade. You can get this ship when you finish the game and enter Hero Mode. When you get this ship, it replaces the Hellcat ship.
Have u notice when you finish the game, u need to unlock ur 6th airship. You need to find its pieces in order to unlock the ship. There are 5 pieces in total.
1. 2 pieces at the brink
2. 1 piece at Far drop
3. 1 piece at the Old European Barracks
4. 1 piece at Sector Zero
You can unlock this ship IF you have started Hero Mode (thats when you have finished the game)
First, when you finish the game and enter hero mode, collect 30 precursor orbs and purchase the secret called "monster mitts" equip them from the menu then exit and resume play. then go to the pause menu and unequip them and resume the game. then equip them again and you will notice they are bigger.this will not work if you don't quit the menu every time. keep on cycling to make them bigger and bigger and even grow larger than the last boss. launching your plane and landing it will make the mitts their normal (default) size again.
When in challenge mode, and all movies unlocked, play them (you can skip it when at start). You will have unlocked four maps, and something more.