MX-81 Hypersonic Operations Aircraft

Notable parts

• 7 parts appear in only a few other sets: Bar 1 x 8 with Brick 1 x 2 Curved Top End (Axle Holder Inside Small End) (White) ×16 — also in 10134 Y-wing Attack Starfighter; Technic Engine Block Half / Side Intake Panel (White) ×4 — also in 8864 Desert of Destruction, 5979 Max Security Transport; Flag 5 x 6 Hexagonal with C Clips (White) — also in 71791 Zane's Dragon Power Spinjitzu Race Car, 75401 Ahsoka's Jedi Interceptor; Hinge Panel 2 x 4 x 3 1/3 Locking Dual 2 Fingers (Trans-Red) — also in 7690 MB-01 Eagle Command Base, 4746 Mobile Command Centre; Windscreen 10 x 6 x 2 Curved (White) — also in 7649 MT-201 Ultra-Drill Walker, 8106 Aero Booster; Wing Plate 20 x 56 with 6 x 10 Opening (White) — also in 7893-2, 7893 Passenger Plane - ANA version; Arm / Leg Mechanical - Alien (Trans-Green) ×4 — also in 7645 MT-61 Crystal Reaper, 7649 MT-201 Ultra-Drill Walker, 7646 ETX Alien Infiltrator (all Space).
• 4 parts are otherwise only found in Space sets: Wheel Hard Plastic Small (22mm D. x 24mm) (Orange) ×4; Cylinder 9 x 4 x 2 Tapered with Flat Bottom, Pin Holes (Trans-Orange); Equipment Martian Hypersled with Pin (Mars Mission) (White); Legs Martian Rounded (Trans-Green).
• 4 moulds first came out in 2008, including in this set: Arm / Leg Mechanical - Alien ×4; Technic Engine Block Half / Side Intake Panel ×4; Brick Curved 2 x 4 x 2/3 No Studs, with Bottom Tubes; Torso/Head Martian with Chest Hole, Alien Commander with Marbled Trans Green….
• 3 existing moulds first came out in their colour in 2008, including in this set: Brick Curved 4 x 1 No Studs [Stud Holder with Asymmetric Ridges] (White) ×14; Plate Special 1 x 2 with Clips Horizontal [Thick U-Clips] (Black) ×2; Flag 5 x 6 Hexagonal with C Clips (White).

Calculated from Rebrickable’s public set inventories, excluding sticker sheets and spare parts.