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LEGO Missing Piece Checker

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.

A.I.R. Operations HQ

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4620 A.I.R. Operations HQ

175 pieces in 90 part and color combinations.

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.

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Piece checklist

Transportation - Land 20 pieces

  • Steering Wheel Small, 2 x 2 Black Part 30663 Element 4153044 ×8
  • Steering Wheel Holder 2 x 2 Dark Gray Part 30640 Element 4153037 ×1
  • Steering Wheel Holder 2 x 2 Light Gray Part 30640 Element 4153034 ×2
  • Grille 1 x 4 [Two Pins] Orange Part 30622 Element 4168828 ×3
  • Fairing 1 x 4 Side Flaring Intake with Two Pins White Part 30647 Element 4153705 ×2
  • Steering Wheel Holder 2 x 2 White Part 30640 Element 4153708 ×3
  • Vehicle Base 4 x 10 x 1 1/3 with 8 x 2 Recessed Center [4 Pins / Technic Holes] White Part 30643 Element 4200130 or 4168724 ×1

Wheels and Tyres 20 pieces

  • Tyre 17.5 x 6 with Shallow Staggered Treads Black Part 51011 Element 4515290 or 4239237 ×6
  • Tyre 24 x 14 Shallow Tread (Tread Small Hub) Black Part 30648 Element 4524358 or 4153005 ×4
  • Wheel 11 x 8 with Center Groove Light Gray Part 42610 Element 4168161 ×6
  • Wheel 18 x 14 with Tread Small Hub White Part 30285 Element 4116774 ×4

Bars, Ladders and Fences 14 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×1
  • Bar 1 x 4 x 2 with Studs Black Part 4083 Element 408326 ×1
  • Bar 1 x 6 [Closed Studs] Red Part 6140 Element 4561802 or 4289557 ×1
  • Bar 1 x 8 x 2 Red Part 2486 Element 4609296 or 248621 ×8
  • Antenna 1 x 4 with Rounded Top Trans-Neon Green Part 3957a ×2
  • Antenna 8H Whip Trans-Neon Green Part 2569 Element 6265159 or 6164380 ×1

Bricks Round and Cones 14 pieces

  • Cone 2 x 2 x 2, Open Stud Dark Gray Part 3942c Element 4114379 or 394227 ×2
  • Brick Round 2 x 2 with Axle Hole Orange Part 3941 Element 4141089 ×2
  • Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open Stud Orange Part 30151a Element 4560750 or 4141096 ×1
  • Brick Round 2 x 2 with Axle Hole Red Part 3941 Element 614321 or 394121 ×2
  • Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open Stud Red Part 30151a Element 4262579 or 4118935 ×1
  • Cone 1 x 1 [No Top Groove] Trans-Neon Orange Part 4589 Element 4529918 or 618847 ×5
  • Cone 2 x 2 x 2, Open Stud White Part 3942c Element 6044601 or 6022158 ×1

Supports, Girders and Cranes 12 pieces

  • Support 2 x 2 x 8 with Grooves, Two Sided Lattice and Top Peg White Part 30646a Element 4153848 ×12

Windscreens and Fuselage 12 pieces

  • Aircraft Fuselage Angular Aft Section 6 x 10 x 5 Orange Part 42601 Element 4171379 or 4171188 ×1
  • Aircraft Fuselage Angular Forward Section 6 x 10 x 5 (Cockpit) Orange Part 42600 Element 4200126 or 4171187 ×1
  • Windscreen 8 x 6 x 4 Canopy with Hinge and Helicopter 'XI-203' Print Orange Part 42602pr0003 ×1
  • Windscreen 8 x 6 x 2 Curved with Black Lines Print Trans-Medium Blue Part 41751pr0006 Element 4171382 ×2
  • Windscreen 8 x 6 x 4 Canopy with Hinge Trans-Medium Blue Part 42602 Element 4168607 ×1
  • Aircraft Fuselage Angular Aft Section 6 x 10 x 5 White Part 42601 Element 4168209 or 4168120 ×1
  • Aircraft Fuselage Angular Bottom 6 x 12 x 5 with Windows on Green & Blue Stripes Print White Part 42605pr0001 ×1
  • Aircraft Fuselage Angular Forward Section 6 x 10 x 5 (Cockpit) White Part 42600 Element 4200125 or 4168154 ×1
  • Aircraft Fuselage Angular Top 6 x 8 x 4 with Door on Blue, Green, and Yellow Stripes Print White Part 42604pr0001 Element 4195783 ×1
  • Windscreen 8 x 6 x 4 Canopy with Hinge and Airliner Aft Blue/Green Print White Part 42602pr0002 ×1
  • Windscreen 8 x 6 x 4 Canopy with Hinge and Airliner Cockpit Blue/Green Print White Part 42602pr0001 ×1

Bricks Sloped 11 pieces

  • Brick Sloped 45° 2 x 1 with Bottom pin, with Black Crosshairs and Green Insectoid Print Dark Gray Part 3040bpr0012 Element 4121977 or 4114639 ×1
  • Brick Sloped 45° 2 x 1 with Bottom pin, with 3 White Buttons, Red and Green Lamps Print Light Gray Part 3040bpr0006 Element 4121974 or 82519 ×1
  • Brick Sloped 45° 2 x 2 with Horizon Indicator Screen Print Light Gray Part 3039pr9971 Element 4141763 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin Trans-Neon Green Part 3040b Element 4544094 or 4140733 ×2
  • Brick Sloped 18° 4 x 2 White Part 30363 Element 4143000 ×1
  • Brick Sloped 45° 10 x 2 x 2 Double White Part 30180 Element 4502027 or 4110051 ×2
  • Brick Sloped 45° 2 x 2 White Part 3039 Element 6552103 or 303901 ×1
  • Brick Sloped 45° 2 x 2 with Radar Screen Print White Part 3039pr0005 Element 4261941 or 82024 ×2

Transportation - Sea and Air 11 pieces

  • Helicopter Skid Rails 12 x 6 Black Part 30248 Element 6469627 or 4546206 ×1
  • Propeller 2 Blade 4 x 22 Black Part 30644 Element 4153025 ×1
  • Propeller 3 Blade 5.5 Diameter with Hole for Technic Pin Black Part 4617b Element 4536184 or 461776 ×1
  • Tail 10 x 10 x 4 Dual with Blue and Yellow Circular Print Bright Green Part 42603pr0001 Element 4171383 ×1
  • Jet Engine Fan with 10 Blades and Technic Pin Chrome Silver Part 46667 Element 4171489 ×2
  • Tail Shuttle with Blue Arrow, Dot Fade Print Orange Part 6239pr0013 Element 4171377 ×1
  • Engine, Large White Part 43121 Element 6109875 or 4171781 ×2
  • Wedge Plate 6 x 12 x 1 Cut Corners with 2 Fixed Rotatable Pins [aka 4 Juniors Wing Plate] White Part 42607c01 Element 4168124 ×2

Bricks 9 pieces

  • Brick 2 x 6 Light Gray Part 2456 Element 4271438 or 4259892 ×1
  • Brick 2 x 4 Orange Part 3001 Element 4153827 or 4119641 ×2
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×3
  • Brick 2 x 4 x 3 White Part 30144 Element 4520663 or 4171859 ×1
  • Brick 2 x 6 White Part 2456 Element 6552122 or 4249698 ×1
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×1

Bricks Special 9 pieces

  • Brick Special 12 x 12 Base with 4 Corner Pegs, 1 x 10 Cutouts, Grooves Light Gray Part 30645 Element 4153020 ×6
  • Brick Special 1 x 2 with Vertical Clip [Thick U Clip] White Part 30237a ×2
  • Brick Special 2 x 2 No Studs, Top Pin White Part 4729 Element 4107436 or 472901 ×1

Hinges, Arms and Turntables 7 pieces

  • Hinge Brick 2 x 2 Locking with 2 Fingers Vertical and Axle Hole, 9 Teeth Black Part 40902 Element 4162235 ×1
  • Turntable 4 x 4 Square Base with Top, Complete Assembly Light Gray Part 3403c01 Element 4221662 or 4143406 ×1
  • Hinge Plate 1 x 8 Locking with Angled Side Extensions, Rounded Plate Underside, 9 Teeth Trans-Neon Green Part 30407 Element 6023317 or 4144514 ×2
  • Hinge Brick 2 x 2 Locking with 1 Finger Vertical and Axle Hole [X Opening] White Part 30389c Element 4171861 ×3

Minifig Accessories 5 pieces

  • Equipment Radio [Extended Handle, Compact Speaker Grille] Black Part 3962b Element 396226 ×2
  • Equipment Camera with Side Sight [aka Space Gun] Dark Gray Part 4360 Element 4143695 ×1
  • Equipment Signal Paddle White Part 3900 Element 390001 ×2

Minifigs 5 pieces

  • Juniors Midifig, Airplane Pilot with Black Pants, Black Shirt and Black Cap with Logo Black Part 43120pr0001 ×1
  • Juniors Midifig, Jack Stone - Black Jacket, Black Legs Black Part 40513pr0003 Element 4169127 ×1
  • Juniors Midifig, Res-Q - Open Faced Helmet and Sunglasses Dark Gray Part 40509pr0004 ×1
  • Juniors Midifig, Crewman with Dark Turquoise Shirt and Pants, Tan Arms Dark Turquoise Part 40514pr0007 ×1
  • Juniors Midifig, Crewman with Blue Overalls, Red Shirt Red Part 40514pr0006 ×1

Plates Round Curved and Dishes 4 pieces

  • Dish 2 x 2 Inverted [Radar] Trans-Neon Green Part 4740 Element 6245297 or 4112517 ×4

Tiles 4 pieces

  • Tile 2 x 2 with Gauges Print White Part 3068bpr0076 Element 4227915 or 82333 ×1
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×2
  • Tile 2 x 2 with Keyboard and Red '0:19' Print White Part 3068bpr0077 Element 82313 ×1

Panels 3 pieces

  • Panel 2 x 8 x 8 Trans-Medium Blue Part 30650 Element 4169217 ×2
  • Panel 2 x 8 x 8 with A.I.R. Logo and Vents Print Trans-Medium Blue Part 30650pr0001 Element 4178318 ×1

Plates Special 3 pieces

  • Plate Special 2 x 4 Thin 4 Holes, Struts and 2 Pins [Undercarriage] Light Gray Part 42608 Element 4168000 ×3

Containers 2 pieces

  • Box / Crate with Handholds 3 x 4 x 1 2/3 Orange Part 30150 Element 6541995 or 4178189 ×2

Minifig Shields, Weapons, & Tools 2 pieces

  • Tool Screwdriver and Spanner / Wrench Black Part 4006 Element 6034000 or 4569095 ×1
  • Tool Pipe Wrench / Adjustable Spanner Light Gray Part 4328 Element 4121703 ×1

Plates 2 pieces

  • Plate 1 x 2 Trans-Neon Green Part 3023 Element 6240224 or 6102038 ×2

Belville, Scala and Fabuland 1 piece

  • Fabuland, Chair Red Part 4222 Element 4141372 ×1

Flags, Banners and Signs 1 piece

  • Flag 4 x 1 Wavy [First Wave Left] White Part 4495a ×1

Non-System Parts 1 piece

  • Playmat, Runway and Helipad Print [No Color/Any Color] Part 43415 Element 4172376 ×1

Stickers 1 piece

  • Sticker Sheet for Set 4620-1 [No Color/Any Color] Part 43358 Element 4171390 ×1

Technic Special 1 piece

  • Technic Brick Special 12 x 2 with 2 Side and 2 End Pins, Technic Holes, and 4W Flared End Orange Part 30621 Element 4170566 ×1

Tubes and Hoses 1 piece

  • Flexible Ribbed Hose 8mm Ends 12L with Tabbed Black Ends Light Gray Part 758c03 Element 4143057 ×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.

Request a replacement from LEGO

Buy the piece

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.

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