Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece
and leave with the element ID LEGO asks for, or a link to buy the part.
140 pieces in 96 part and color combinations, plus 14 minifigures.
The official piece count includes the 69 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.
Before you call it missing
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
Look-alike colors in this set
These parts appear in this set in two colors that are easy to confuse. If you are one short in one color,
check whether it went in where the other color belongs. Each color has its own element ID in the parts list
at the back of the instructions.
Tile Special 1 x 2 Grille with Bottom GrooveLight Bluish Gray ×2Flat Silver ×3Light Bluish Gray is lighter than Flat Silver.
Windscreen 4 x 4 x 1 2/3 Canopy Half Sphere with HandleTrans-ClearPart 18990Element 6514145 or 6244781×1
Minifigures
14 figures
Astronaut - White Torso and Legs, Orange Trim, White Helmet, Side Lamp RedMinifigure, checked as a whole figure×1
Astronaut - Blue Torso and Legs, Reddish Brown HairMinifigure, checked as a whole figure×1
Astronaut - Blue Torso and Legs, Black HairMinifigure, checked as a whole figure×1
Astronaut - Blue Torso and Legs, Dark Brown HairMinifigure, checked as a whole figure×1
Astronaut - Bright Light Blue Torso and Legs, White Helmet, Trans Orange VisorMinifigure, checked as a whole figure×1
Astronaut - Orange Torso and Legs, White Helmet, Trans-Light Blue Visor, Reddish Brown MustacheMinifigure, checked as a whole figure×1
Dark Azure Torso, Tan Legs, Medium Nougat HairMinifigure, checked as a whole figure×1
Scientist - White Torso, Labcoat, Light Bluish grey Legs, Medium Nougat HairMinifigure, checked as a whole figure×1
Droid EngineerMinifigure, checked as a whole figure×1
Astronaut, Woman, Orange Torso and Legs, White Helmet, Trans-Light Blue VisorMinifigure, checked as a whole figure×1
Physician - White Labcoat, Dark Blue Legs, Red CapMinifigure, checked as a whole figure×1
Sand Blue Torso, Sand Blue Legs, Black HairMinifigure, checked as a whole figure×1
Technician - Dark Blue Torso, Dark Blue Legs, White Helmet, Dark Brown HairMinifigure, checked as a whole figure×1
Technician - Dark Blue Torso, Dark Blue Legs, Welding MaskMinifigure, checked as a whole figure×1
Tick each piece as you find it, or mark it missing.
When a piece really is missing
Ask LEGO
LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for
the set number and each piece's element ID, the number printed beside the piece in the parts list at the back
of the instructions. This checker lists both.
Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from
older or second-hand sets.
Keep a record
Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick
pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.