# LEGO 7644-1 — MX-81 Hypersonic Operations Aircraft (2008)

Source: https://www.brickmissing.com/sets/7644-1-mx-81-hypersonic-operations-aircraft
Publisher: BrickMissing (https://www.brickmissing.com) — free LEGO parts checker. Not affiliated with the LEGO Group.

The LEGO Mars Mission MX-81 Hypersonic Operations Aircraft (7644-1) offers a versatile centerpiece for planetary defense. This formidable spacecraft functions as five incredible vehicles in one, designed for strategic alien-fighting operations. Its advanced arsenal includes a mining scout rover, featuring a quick-deployment platform to survey hostile terrain. For air support, twin attack cruisers with dynamic swing-out wings detach for rapid engagements. A mobile flying lab provides crucial intelligence and support, completing the multi-functional design. The set includes three brave astronaut minifigures, alongside an ominous glow-in-the-dark alien minifigure and the formidable new commander alien, preparing for any surprise alien attack. The modular design, including its quick-deployment mechanism, highlights the engineering for rapid response in deep space.

## Set facts

- Set number: 7644-1
- Name: MX-81 Hypersonic Operations Aircraft
- Theme: Space › Mars Mission
- Released: 2008
- Pieces: 795
- Distinct part + colour lots: 188
- Build difficulty: intermediate
- Repairability: 4.3% of this set's lots are hard to replace (8 of 188 part+colour combinations appear in three or fewer sets in the entire LEGO catalog).

## Complete parts list (188 lots, 795 pieces)

Prices are the official LEGO Pick a Brick price per individual part, where LEGO publishes one.

| Qty | Part | Colour | Part no. | LEGO element ID | LEGO price each |
| ---: | --- | --- | --- | --- | --- |
| 4 | Wing, Tail 4 x 1 x 3 | White | 2340 | 234001 | — |
| 2 | Equipment Goblet / Glass | Light Bluish Gray | 2343 | 4261919 | — |
| 4 | Brick 2 x 2 Corner | White | 2357 | 235701 | €0,16 |
| 27 | Tile Special 1 x 2 Grille with Bottom Groove | Orange | 2412b | 4125254 | €0,06 |
| 8 | Tile Special 1 x 2 Grille with Bottom Groove | Trans-Red | 2412b | 6250158 | €0,11 |
| 2 | Plate 2 x 2 Corner | Black | 2420 | 242026 | €0,07 |
| 7 | Tile 1 x 4 with Groove | White | 2431 | 243101 | €0,12 |
| 1 | Tile Special 1 x 2 with Handle | Red | 2432 | 243221 | €0,11 |
| 7 | Tile Special 1 x 2 with Handle | White | 2432 | 243201 | €0,11 |
| 1 | Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] | White | 2444 | 244401 | — |
| 9 | Plate 2 x 12 | Black | 2445 | 244526 | €0,36 |
| 2 | Brick 2 x 6 | Black | 2456 | 4181139 | €0,29 |
| 2 | Brick Special 1 x 2 with Pin | Black | 2458 | 245823 | — |
| 2 | Tile Special 2 x 2 with Top Pin | Red | 2460 | 246021 | — |
| 4 | Plate Special 1 x 2 Side Handle [Free Ends] | Orange | 2540 | 4190164 | €0,07 |
| 2 | Tile Special 1 x 1 with Clip and Straight Tips | White | 2555 | 255501 | — |
| 4 | Panel 3 x 4 x 6 Curved Top | White | 2571 | 4497735 | — |
| 1 | Plate Round 2 x 2 with Rounded Bottom [Boat Stud] | Trans-Dark Blue | 2654 | 6171732 | €0,12 |
| 1 | Plate Round 2 x 2 with Rounded Bottom [Boat Stud] | Red | 2654 | 4278275 | €0,07 |
| 30 | Technic Pin with Friction Ridges Lengthwise and Center Slots | Black | 2780 | 278026 | — |
| 6 | Brick Special 1 x 2 with Grille | White | 2877 | 287701 | €0,16 |
| 4 | Lever Small Base with Black Lever | White | 298c02 | 73737 | €0,19 |
| 6 | Brick 2 x 4 | Light Bluish Gray | 3001 | 4211385 | €0,22 |
| 8 | Brick 2 x 4 | Black | 3001 | 300126 | €0,22 |
| 9 | Brick 2 x 3 | White | 3002 | 300201 | €0,17 |
| 1 | Brick 2 x 2 | Red | 3003 | 300321 | €0,13 |
| 4 | Brick 1 x 1 | White | 3005 | 300501 | €0,07 |
| 2 | Brick 2 x 10 | White | 3006 | 4617855 | €0,58 |
| 2 | Brick 1 x 8 | Black | 3008 | 300826 | €0,24 |
| 2 | Brick 1 x 4 | Dark Bluish Gray | 3010 | 4211103 | €0,16 |
| 2 | Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open Stud | Trans-Clear | 30151a | 4113949 | — |
| 4 | Rock 1 x 1 Jewel / Gem 24 Facet | Trans-Neon Green | 30153 | 4114505 | — |
| 2 | Plate 2 x 4 | White | 3020 | 302001 | €0,15 |
| 2 | Plate 2 x 4 | Black | 3020 | 302026 | €0,15 |
| 2 | Plate 2 x 4 | Orange | 3020 | 4158355 | €0,15 |
| 9 | Plate 2 x 3 | White | 3021 | 302101 | €0,13 |
| 2 | Plate 2 x 2 | Orange | 3022 | 4159007 | €0,10 |
| 13 | Plate 1 x 2 | White | 3023 | 302301 | €0,08 |
| 5 | Plate 1 x 2 | Black | 3023 | 302326 | €0,08 |
| 6 | Brick Special 1 x 2 with Handle | White | 30236 | 4140626 | — |
| 2 | Brick Special 1 x 2 with Vertical Clip [Thick U Clip] | Dark Gray | 30237a | 4113207 | — |
| 2 | Slope Inverted 45° 6 x 4 Double with 4 x 4 Recessed | Black | 30283 | 4119370 | — |
| 1 | Plate 4 x 10 | Black | 3030 | 303026 | €0,56 |
| 1 | Equipment Space Binoculars / Scanner / Electrobinoculars | Dark Bluish Gray | 30304 | 4211124 | — |
| 4 | Plate 4 x 4 | Black | 3031 | 4243815 | €0,21 |
| 6 | Plate 4 x 4 | Black | 3031 | 4243819 | €0,21 |
| 3 | Plate 4 x 6 | White | 3032 | 303201 | €0,41 |
| 8 | Plate 2 x 8 | Black | 3034 | 303423 | €0,29 |
| 1 | Plate 2 x 8 | Black | 3034 | 303426 | €0,29 |
| 2 | Tile Special 2 x 3 with 2 Clips [Thick Open O Clips] | Black | 30350b | 4297713 | — |
| 6 | Bar 1 x 8 with Brick 1 x 2 Curved Top End (Axle Holder Inside Small End) | Black | 30359b | 4164067 | — |
| 16 | Bar 1 x 8 with Brick 1 x 2 Curved Top End (Axle Holder Inside Small End) | White | 30359b | 4222342 | — |
| 2 | Cylinder 3 x 6 x 2 2/3 Horizontal Hollow Studs | White | 30360 | 4142999 | — |
| 4 | Slope 18° 4 x 2 | White | 30363 | 4143000 | €0,22 |
| 1 | Slope 45° 2 x 4 | Black | 3037 | 303726 | €0,17 |
| 2 | Slope 45? 2 x 2 | White | 3039 | 303901 | €0,11 |
| 2 | Slope 45° 2 x 1 with Bottom Pin | Black | 3040b | 4121966 | €0,10 |
| 6 | Brick Special 1 x 4 with 4 Studs on One Side | Light Bluish Gray | 30414 | 4211636 | €0,18 |
| 2 | Brick Special 1 x 2 with 2 Pins, Round Pin Holes | Light Bluish Gray | 30526 | 4211660 | — |
| 2 | Plate Round Corner 4 x 4 | Lime | 30565 | 4504705 | €0,18 |
| 3 | Slope Curved 2 x 2 with Lip, No Studs | White | 30602 | 4195869 | — |
| 2 | Slope 2 x 2 No Studs, with 3 Side Pistons Raised Edges | Black | 30603 | 4163524 | — |
| 18 | Brick Round 1 x 1 Open Stud | Trans-Dark Blue | 3062b | 6514233 | €0,08 |
| 4 | Brick Round 1 x 1 Open Stud | Trans-Red | 3062b | 6238673 | €0,08 |
| 10 | Brick Round 1 x 1 Open Stud | Dark Bluish Gray | 3062b | 4211090 | €0,06 |
| 1 | Tile 2 x 2 with Groove | Black | 3068b | 306826 | €0,07 |
| 7 | Tile 2 x 2 with Groove | White | 3068b | 306801 | €0,07 |
| 3 | Tile 1 x 2 with Groove | Lime | 3069b | 4500125 | €0,07 |
| 4 | Technic Brick 1 x 2 [2 Pin Holes] | Dark Bluish Gray | 32000 | 4210762 | €0,10 |
| 2 | Technic Axle and Pin Connector Angled #3 - 157.5? | Red | 32016 | 6261396 | €0,13 |
| 8 | Technic Brick 1 x 14 [13 Pin Holes] | Black | 32018 | 4107558 | €0,56 |
| 14 | Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] | Red | 32054 | 4125198 | — |
| 6 | Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] | White | 32064b | — | — |
| 2 | Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] | Red | 32064b | — | — |
| 2 | Technic Axle 5 | Light Bluish Gray | 32073 | 4211639 | €0,11 |
| 1 | Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole | White | 32184 | 6276981 | €0,12 |
| 9 | Technic Beam 1 x 15 Thick | Black | 32278 | 4542573 | €0,42 |
| 2 | Technic Beam 1 x 7 Thick | Black | 32524 | 4495935 | €0,25 |
| 2 | Technic Beam 3 x 5 L-Shape Thick | Black | 32526 | 4142823 | €0,24 |
| 1 | Technic Brick 6 x 8 with 4 x 6 Opening | Black | 32532 | 6448394 | €1,16 |
| 12 | Technic Pin Long without Friction Ridges | Tan | 32556 | — | — |
| 5 | Plate 1 x 8 | Black | 3460 | 346023 | €0,18 |
| 4 | Plate 1 x 3 | White | 3623 | 362301 | €0,07 |
| 1 | Minifig Head [Plain] [Blocked Open Stud] | Trans-Clear | 3626b | 3001140 | — |
| 6 | Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] | White | 3660 | 366001 | — |
| 3 | Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] | Black | 3660 | 366026 | — |
| 1 | Plate 1 x 6 | Dark Bluish Gray | 3666 | 4211056 | €0,17 |
| 2 | Slope 65° 2 x 2 x 2 with Bottom Tube | Black | 3678b | 4273703 | €0,22 |
| 6 | Technic Brick 1 x 2 [1 Pin Hole] | Black | 3700 | 370026 | €0,12 |
| 25 | Technic Brick 1 x 4 [3 Pin Holes] | Black | 3701 | 370126 | €0,17 |
| 4 | Technic Brick 1 x 16 [15 Pin Holes] | White | 3703 | 4508661 | €0,82 |
| 1 | Technic Axle 4 | Black | 3705 | 370526 | €0,08 |
| 1 | Technic Axle 12 | Black | 3708 | 370826 | €0,27 |
| 5 | Technic Plate 2 x 4 [3 Holes] | Light Bluish Gray | 3709 | 4211444 | €0,13 |
| 11 | Plate 1 x 4 | Black | 3710 | 371023 | €0,12 |
| 2 | Technic Bush | Light Bluish Gray | 3713 | 6275844 | €0,05 |
| 2 | Slope Inverted 33° 3 x 2 [Connections between Studs] | Black | 3747b | 374726 | — |
| 2 | Slope Inverted 33° 3 x 2 [Connections between Studs] | White | 3747b | 4500469 | — |
| 2 | Technic Axle Pin without Friction Ridges Lengthwise | Tan | 3749 | 4666579 | €0,06 |
| 5 | Plate Special 1 x 2 with 1 Stud without Groove (Jumper) | Dark Gray | 3794a | 379427 | — |
| 4 | Plate 2 x 6 | White | 3795 | 379501 | €0,19 |
| 1 | Steering Stand 1 x 2 with Black Steering Wheel | White | 3829c01 | 9551 | €0,36 |
| 1 | Plate 2 x 10 | Light Bluish Gray | 3832 | 4211462 | €0,29 |
| 10 | Hinge Brick 1 x 2 Base | Light Bluish Gray | 3937 | 4211469 | €0,10 |
| 9 | Hinge Brick 1 x 2 Top Plate Thin | White | 3938 | 393801 | €0,10 |
| 6 | Brick Round 2 x 2 with Axle Hole | Lime | 3941 | 4527943 | €0,11 |
| 5 | Brick Round 2 x 2 with Axle Hole | White | 3941 | 614301 | €0,11 |
| 2 | Cone 2 x 2 x 2, Open Stud | Black | 3942c | 6092664 | €0,22 |
| 2 | Cone 2 x 2 x 2, Open Stud | White | 3942c | 6044601 | €0,22 |
| 1 | Antenna 1 x 4 with Rounded Top | Trans-Clear | 3957a | 4204621 | — |
| 1 | Plate 6 x 6 | White | 3958 | 4144012 | €0,53 |
| 2 | Weapon Gun / Torch (Space) [with Grooves] | Light Bluish Gray | 3959 | 4244750 | — |
| 1 | Equipment Radio [Extended Handle, Compact Speaker Grille] | Black | 3962b | 396226 | — |
| 2 | Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) | Black | 4032a | 403226 | €0,06 |
| 1 | Large Figure Weapon Spear, Drill with Axle and Hole | Black | 40340 | 4144521 | — |
| 2 | Brick Special 1 x 1 with Headlight | Black | 4070 | 407026 | €0,07 |
| 1 | Hinge Brick 2 x 2 Locking with 2 Fingers Vertical and Axle Hole, 9 Teeth | Light Bluish Gray | 40902 | 4215971 | — |
| 6 | Tile Round 2 x 2 with Bottom Cross | Black | 4150 | 415026 | — |
| 4 | Tile 1 x 8 with Groove | White | 4162 | 416201 | €0,15 |
| 1 | Wedge Curved 6 x 2 Right, Inner Ridges | White | 41747 | 4160101 | — |
| 1 | Wedge Curved 6 x 2 Left, Inner Ridges | White | 41748 | 4160124 | €0,36 |
| 6 | Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes | Black | 42003 | 6273708 | €0,12 |
| 4 | Brick Curved 6 x 1 | Black | 42022 | 4160393 | €0,30 |
| 6 | Brick Curved 6 x 1 Inverted | Black | 42023 | 6112323 | €0,29 |
| 24 | Technic Pin 1/2 | Black | 4274 | 4143005 | €0,05 |
| 1 | Plate 2 x 16 | Black | 4282 | 428226 | €0,51 |
| 2 | Slope 33° 3 x 1 | White | 4286 | 428601 | €0,10 |
| 8 | Technic Axle Pin with Friction Ridges Lengthwise | Black | 43093 | 4206482 | €0,06 |
| 1 | Panel 1 x 4 x 1 with Rounded Corners [Thick Wall] | Black | 43337 | 4142727 | — |
| 1 | Box 2 x 2 x 2 [Hollow Studs] | Trans-Neon Green | 4345b | 4107506 | — |
| 1 | Box 2 x 2 x 2 Door with Slot | White | 4346 | 434601 | €0,16 |
| 1 | Wedge Curved 6 x 4 Triple | White | 43712 | 4179869 | €0,48 |
| 1 | Technic Axle 7 | Light Bluish Gray | 44294 | 4211805 | €0,16 |
| 1 | Hinge Panel 2 x 4 x 3 1/3 Locking Dual 2 Fingers | Trans-Red | 44572 | 4226965 | — |
| 2 | Plate 1 x 10 | Black | 4477 | 447726 | €0,16 |
| 1 | Hinge Tile 1 x 4 Locking Dual 1 Fingers on Top [4 Locking Ridges] | White | 44822 | 4190255 | — |
| 3 | Technic Axle 3 | Light Bluish Gray | 4519 | 4211815 | €0,05 |
| 1 | Wedge Curved 16 x 4 Triple | Black | 45301 | 4200486 | — |
| 1 | Windscreen 10 x 6 x 2 Curved | White | 45705 | 4194206 | — |
| 2 | Windscreen 10 x 6 x 2 Curved | Trans-Orange | 45705 | 4506784 | — |
| 7 | Cone 1 x 1 [No Top Groove] | Trans-Dark Blue | 4589 | 618843 | — |
| 1 | Brick Special 1 x 1 Studs on 4 Sides | Black | 4733 | 473326 | €0,22 |
| 1 | Dish 2 x 2 Inverted [Radar] | Trans-Dark Blue | 4740 | 3006343 | — |
| 2 | Wedge Curved Inverted 10 x 6 x 2 Cockpit | Black | 47406 | 4209683 | — |
| 5 | Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End | Light Bluish Gray | 47457 | 4494475 | €0,15 |
| 2 | Plate Special 2 x 2 with Wheels Holder Wide - Technic Pins | Light Bluish Gray | 47720 | 4219243 | — |
| 2 | Wheel Arch, Curved Wedge 4 x 3 with 2 x 2 Opening and 4 Studs | Orange | 47755 | 4500337 | — |
| 1 | Hinge 1 x 3 Triangle with Two Pins, 1 Locking Finger, Round Pin Holes | Dark Bluish Gray | 47973 | 4222244 | — |
| 2 | Plate Special 1 x 2 [Side Handle Closed Ends] | Black | 48336 | 4225201 | €0,07 |
| 1 | Bar 1L with Clip | Black | 48729a | 4272218 | — |
| 6 | Slope Curved 3 x 1 No Studs | Black | 50950 | 4251161 | €0,12 |
| 1 | Wedge Curved 10 x 3 Left | White | 50955 | 6015474 | €0,74 |
| 1 | Wedge Curved 10 x 3 Right | White | 50956 | 6015477 | €0,68 |
| 1 | Flag 5 x 6 Hexagonal with C Clips | White | 51000 | 4244959 | — |
| 1 | Wing Plate 20 x 56 with 6 x 10 Opening | White | 54093 | 4284004 | — |
| 2 | Slope 30° 1 x 1 x 2/3 (Cheese Slope) | Trans-Orange | 54200 | 6245265 | €0,08 |
| 4 | Slope 30° 1 x 1 x 2/3 (Cheese Slope) | Black | 54200 | 4504382 | €0,06 |
| 1 | Technic Axle 8 with Stop | Dark Bluish Gray | 55013 | 4499858 | €0,21 |
| 1 | Projectile, Technic Competition Arrow, Liftarm Shaft with Hollow Black Rubber End | Light Bluish Gray | 57028c01 | 4299625 | — |
| 2 | Flexible Ribbed Hose 8mm Ends 19L | Orange | 57539 | 4505775 | — |
| 2 | Flexible Ribbed Hose 8mm Ends 19L | Black | 57539 | 4504612 | — |
| 1 | Launcher, Technic Competition Cannon Flat Bottom [Complete Assembly] | Dark Bluish Gray | 57796 | 4499435 | — |
| 1 | Equipment Martian Hypersled with Pin (Mars Mission) | White | 58843 | 4501924 | — |
| 2 | Brick Round Corner 10 x 10 with Slope 33° Edge, Axle Hole, Facet Cutout | Black | 58846 | 6454174 | €1,39 |
| 1 | Cylinder 9 x 4 x 2 Tapered with Flat Bottom, Pin Holes | Trans-Orange | 58947 | 4502233 | — |
| 1 | Technic Axle 5.5 with Stop [Rounded Short End] | Dark Bluish Gray | 59426 | 4508553 | €0,11 |
| 2 | Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] | White | 6019 | 601901 | — |
| 2 | Plate Special 1 x 2 with Clips Horizontal [Thick U-Clips] | Yellow | 60470a | 4515171 | — |
| 4 | Technic Engine Block Half / Side Intake Panel | White | 61069 | 4529162 | — |
| 4 | Wheel Hard Plastic Small (22mm D. x 24mm) | Orange | 6118 | 4505861 | — |
| 1 | Hinge Brick 2 x 2 Top Plate Thin | Light Bluish Gray | 6134 | 4211881 | €0,15 |
| 3 | Plate Round 1 x 1 with Solid Stud | White | 6141 | 614101 | €0,05 |
| 32 | Plate Round 1 x 1 with Solid Stud | Orange | 6141 | 4157103 | €0,05 |
| 2 | Plate Round 1 x 1 with Solid Stud | Trans-Dark Blue | 6141 | 6514055 | €0,05 |
| 7 | Plate Round 1 x 1 with Solid Stud | Lime | 6141 | 4183133 | €0,05 |
| 14 | Slope Curved 4 x 1 No Studs [Stud Holder with Asymmetric Ridges] | Very Light Bluish Gray | 61678 | 4568974 | — |
| 2 | Plate Special 4 x 4 with Studs on One Edge [Plain] | White | 6179 | 617901 | €0,25 |
| 6 | Technic Pin Connector Round [Slotted] | White | 62462 | 6173116 | €0,06 |
| 1 | Sticker Sheet 1 for Set 7644-1 | Unknown | 63091 | 4527609 | — |
| 1 | Sticker Sheet 2 for Set 7644-1 | Unknown | 63430 | 4529037 | — |
| 2 | Technic Brick 1 x 1 with Pin Hole | Black | 6541 | 654126 | €0,07 |
| 8 | Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots | Black | 6558 | 4514553 | — |
| 1 | Wedge 3 x 2 Right | Black | 6564 | 4526931 | €0,34 |
| 1 | Wedge 3 x 2 Left | Black | 6565 | 4527766 | €0,33 |
| 2 | Technic Axle 3 with Stud | Dark Bluish Gray | 6587 | 4211086 | — |
| 8 | Tile 1 x 6 with Groove | Black | 6636 | 663626 | €0,13 |
| 1 | Technic Rubber Belt 24mm | Red | 85544 | 4544143 | €2,65 |
| 1 | Slope Brick Curved 2 x 4 x 2/3 No Studs, with Bottom Tubes | White | 88930 | 4583297 | €0,19 |

## Notes

- Track which of these parts you own and see what is missing: https://www.brickmissing.com/sets/7644-1-mx-81-hypersonic-operations-aircraft
- Inventory data is based on official LEGO inventories via the Rebrickable catalog, updated daily.
- Part images, minifigure lists and related sets are on the set page: https://www.brickmissing.com/sets/7644-1-mx-81-hypersonic-operations-aircraft