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.
1,133 pieces in 225 part and color combinations, plus 3 minifigures.
The official piece count includes the 18 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.
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]Red ×2Trans-Red ×2Trans-Red is see-through: hold the piece up to a light.
Brick Wedged, Curved 2 x 1 with Stud Notch LeftBlackPart 29120Element 6181720×1
Brick Wedged, Curved 2 x 1 with Stud Notch RightBlackPart 29119Element 6181713×1
Brick Wedged, Sloped Inverted 6 x 6 x 1 TripleBlackPart 29115Element 6195436×1
Minifig Accessories
3 pieces
Equipment Camera with Side Sight [aka Space Gun]BlackPart 4360Element 436026×2
Equipment Metal Detector, no Stud on Search HeadBlackPart 93106Element 6168638 or 4637372×1
Pneumatics
2 pieces
Pneumatic T-Piece (T Bar) [New Style]BlackPart 4697bElement 61042091 spare in the box×2
Supports, Girders and Cranes
2 pieces
Support 2 x 2 x 10 Girder Triangular Vertical - Type 4 - 3 Posts, 3 SectionsBlackPart 95347Element 6470981 or 4667463×2
Windscreens and Fuselage
2 pieces
Windscreen 4 x 4 x 4 2/3 with HandleTrans-YellowPart 11289Element 6534033×1
Windscreen 6 x 13 x 2Trans-YellowPart 13252Element 6576509 or 6534132×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Transportation - Land
1 piece
Steering Stand 1 x 2 with Black Steering WheelYellowPart 3829c01Element 9553×1
Minifigures
3 figures
Blacktron I - RereleaseMinifigure, checked as a whole figure×3
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.