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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.

Heavy Lift Helicopter

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42052 Heavy Lift Helicopter

1,042 pieces in 141 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

Black 250 pieces

  • Axle Hose, Soft 19L Black Part 32235 Element 6139205 or 4121650 1 spare in the box ×1
  • Bar 3L Black Part 87994 Element 6185316 or 6093525 1 spare in the box ×1
  • Hose Rigid 3mm D. 6L / 4.8cm Black Part 75c06 Element 4640742 or 4546459 1 spare in the box ×2
  • String Cord Thin (0.5mm) 50cm Black Part 56823c50 Element 6530026 or 6489925 ×1
  • Technic Axle 10 Black Part 3737 Element 373726 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×8
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×6
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×2
  • Technic Axle and Pin Connector Toggle Joint Smooth Black Part 32126 Element 6457112 or 6322045 ×2
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Black Part 11478 Element 6327028 or 6030286 ×7
  • Technic Beam 1 x 9 Bent (6 - 4) Thick Black Part 6629 Element 6279881 or 4119800 ×1
  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×4
  • Technic Link 1 x 9 Black Part 32293 Element 6244698 or 4141300 ×1
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise Black Part 15100 Element 6073231 ×17
  • Technic Pin Connector Perpendicular 2 x 4 Bent - Beam with 90 Hole Ø 4.8 Black Part 11455 Element 6172966 or 6019986 ×1
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 4 spares in the box ×184
  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×4
  • Technic Turntable Small Base, 28 Tooth Black Part 99010 Element 6326620 or 4652236 ×2
  • Tyre 30.4 x 14 VR Solid Black Part 58090 Element 6601610 or 4550937 ×2
  • Tyre Offset Tread with Center Band 23 x 7 Black Part 61254 Element 4541455 ×2

Light Bluish Gray 202 pieces

  • Battery Box, Power Functions 4 x 11 x 7 with Orange Switch and Dark Bluish Gray Covers [Complete Assembly] [New Version] Light Bluish Gray Part 16511 Element 6368436 or 6257768 ×1
  • Motor, Medium, Power Functions, 3 x 6 x 3 with Dark Bluish Gray Bottom and 20cm Wire Light Bluish Gray Part 58120 Element 6209881 or 6151440 ×1
  • Plate Round 4 x 4 with Pin Hole Light Bluish Gray Part 60474 Element 4515351 ×2
  • Plate Special 3 x 4 with 1 x 4 Center Studs [Plain] Light Bluish Gray Part 88646 Element 6122124 or 6079461 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×34
  • Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×6
  • Technic Axle Connector with Axle Hole Light Bluish Gray Part 32039 Element 4211553 ×8
  • Technic Axle and Pin Connector Angled #2 - 180° Light Bluish Gray Part 32034 Element 6346487 or 4211567 ×13
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Light Bluish Gray Part 32184 Element 6276969 or 4211621 ×16
  • Technic Axle and Pin Connector Perpendicular Split Light Bluish Gray Part 92907 Element 6279023 or 4630114 ×2
  • Technic Axle and Pin Connector Perpendicular Triple Light Bluish Gray Part 63869 Element 6331441 or 4538007 ×4
  • Technic Beam 1 x 5 Thick Light Bluish Gray Part 32316 Element 4211651 ×3
  • Technic Beam 1 x 6 Thin Light Bluish Gray Part 32063 Element 6170293 or 4211586 ×7
  • Technic Beam 2 x 4 L-Shape Thick Light Bluish Gray Part 32140 Element 6271831 or 4211610 ×14
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin Semi-Reduced Light Bluish Gray Part 33299b Element 4563045 ×1
  • Technic Beam 3 x 3 L-Shape Thin Light Bluish Gray Part 32056 Element 6271815 or 4211574 ×12
  • Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] Light Bluish Gray Part 14720 Element 6055519 ×2
  • Technic Disc 3 x 3 Light Bluish Gray Part 2723 Element 4667578 ×1
  • Technic Gear 16 Tooth Reinforced [New Style] Light Bluish Gray Part 94925 Element 4640536 ×6
  • Technic Pin Connector Hub with 1 Axle Light Bluish Gray Part 22961 Element 6123815 ×6
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes] Light Bluish Gray Part 87082 Element 4560175 ×7
  • Technic Pin Double with Axle Hole Light Bluish Gray Part 32138 Element 4211888 ×2
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Light Bluish Gray Part 32054 Element 4211865 ×34
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×7
  • Technic Steering Wheel Small (3 Studs Diameter) Light Bluish Gray Part 2819 Element 4580510 or 4211578 ×1
  • Technic Turntable Small Top Light Bluish Gray Part 99009 Element 4652235 ×2
  • Technic Universal Joint 3L [Complete Assembly] Light Bluish Gray Part 61903 Element 6335279 or 6321309 ×2
  • Technic Worm Gear Light Bluish Gray Part 4716 Element 4211510 ×3
  • Wheel 18 x 14 with Pin Hole, Fake Bolts and Shallow Spokes Light Bluish Gray Part 55981 Element 6109684 or 4299119 ×2
  • Wheel 18 x 8 with Fake Bolts and Deep Spokes with Inner Ring Light Bluish Gray Part 13971 Element 6359807 or 6044729 ×2

White 182 pieces

  • Technic Axle and Pin Connector Angled #1 White Part 32013 Element 6332573 or 4118981 ×19
  • Technic Axle and Pin Connector Angled #5 - 112.5° White Part 32015 Element 6271349 or 6003297 ×4
  • Technic Axle and Pin Connector Perpendicular White Part 6536 Element 6261372 or 4173670 ×29
  • Technic Beam 1 x 11 Thick White Part 32525 Element 6028103 or 4296265 ×2
  • Technic Beam 1 x 11.5 Double Bent Thick White Part 32009 Element 6271161 or 6004157 ×2
  • Technic Beam 1 x 15 Thick White Part 32278 Element 4542578 or 4227533 ×6
  • Technic Beam 1 x 3 Thick White Part 32523 Element 6632140 or 4208160 ×15
  • Technic Beam 1 x 3 Thin White Part 6632 Element 6360038 or 4107826 ×4
  • Technic Beam 1 x 5 Thick White Part 32316 Element 4249021 or 4140465 ×17
  • Technic Beam 1 x 9 Thick White Part 40490 Element 6001831 or 4156341 ×18
  • Technic Beam 2 x 4 L-Shape Thick White Part 32140 Element 6271824 or 4118980 ×7
  • Technic Beam 3 x 5 L-Shape Thick White Part 32526 Element 6632144 or 4585040 ×16
  • Technic Driving Ring Connector White Part 18948 Element 6276052 or 6100932 ×6
  • Technic Gear 24 Tooth Clutch with Dark Bluish Gray Center White Part 76244 Element 6198486 or 6036892 ×1
  • Technic Panel 3 x 11 x 1 White Part 15458 Element 6055627 ×3
  • Technic Panel 5 x 11 x 1 White Part 64782 Element 6004135 or 4580019 ×7
  • Technic Panel 5 x 11 x 1 Tapered White Part 18945 Element 6097440 ×2
  • Technic Panel Curved 11 x 3 with 2 Pin Holes through Panel Surface White Part 62531 Element 6004137 ×2
  • Technic Panel Fairing # 3 Small Smooth Long, Side A White Part 64683 Element 4547581 ×1
  • Technic Panel Fairing # 4 Small Smooth Long, Side B White Part 64391 Element 4547582 ×1
  • Technic Panel Fairing #1 Small Smooth Short, Side A White Part 87080 Element 4558878 ×2
  • Technic Panel Fairing #13 Large Short Smooth, Side A White Part 64394 Element 6030433 ×1
  • Technic Panel Fairing #14 Large Short Smooth, Side B White Part 64680 Element 6030432 ×1
  • Technic Panel Fairing #2 Small Smooth Short, Side B White Part 87086 Element 4558874 ×2
  • Technic Panel Fairing #21 5L Small Smooth, Side B White Part 11946 Element 6330084 or 6114580 ×2
  • Technic Panel Fairing #22 5L Small Smooth, Side A White Part 11947 Element 6343987 or 6114583 ×2
  • Technic Panel Fairing #5 Long Smooth, Side A White Part 64681 Element 4558802 ×4
  • Technic Panel Fairing #6 Long Smooth, Side B White Part 64393 Element 4558797 ×4
  • Tipper Drum 3 x 6 x 10 Cement Mixer Half with 4 Technic Pin Holes White Part 57792 Element 6139303 or 6036879 ×2

Blue 160 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×51
  • Technic Beam 1 x 2 Thin Blue Part 41677 Element 6360123 or 4186834 ×4
  • Technic Panel Curved and Bent 6 x 3 Blue Part 24116 Element 6268009 or 6133684 ×2
  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×19
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×84

Dark Bluish Gray 111 pieces

  • Hook with Towball Dark Bluish Gray Part 30395 Element 30395199 or 6347464 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Bluish Gray Part 4032a Element 4211042 ×4
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Dark Bluish Gray Part 6553 Element 4210665 ×2
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×11
  • Technic Axle 5.5 with Stop [Rounded Short End] Dark Bluish Gray Part 59426 Element 4508553 ×2
  • Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×4
  • Technic Axle Connector Smooth [with x Hole + Orientation] Dark Bluish Gray Part 59443 Element 6084613 or 4516546 ×7
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×13
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Dark Bluish Gray Part 42003 Element 6273715 or 4210857 ×6
  • Technic Beam 1 x 11 Thick Dark Bluish Gray Part 32525 Element 4603472 or 4534914 ×13
  • Technic Beam 1 x 13 Thick Dark Bluish Gray Part 41239 Element 4522937 or 4261932 ×2
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Dark Bluish Gray Part 60483 Element 6265093 or 6006141 ×8
  • Technic Beam 1 x 4 Thin Dark Bluish Gray Part 32449 Element 6327561 or 4210749 ×6
  • Technic Beam 3 x 5 L-Shape Thick Dark Bluish Gray Part 32526 Element 4210753 ×2
  • Technic Driving Ring 3L Dark Bluish Gray Part 18947 Element 6100931 ×2
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Dark Bluish Gray Part 3648b Element 6133119 or 4514558 ×1
  • Technic Gear 8 Tooth [Reinforced] Dark Bluish Gray Part 10928 Element 6631413 or 6012451 ×3
  • Technic Pin Connector Round 1L [Beam] Dark Bluish Gray Part 18654 Element 6100030 1 spare in the box ×6
  • Technic Reel 3 x 2 Dark Bluish Gray Part 32012 Element 32012199 or 4239891 ×1
  • Technic Rotor Blade 31L with Beam 3L with Black Rubber Tip Dark Bluish Gray Part 99013pat0001 Element 6170508 or 6129007 ×6
  • Technic Wedge Belt Wheel [aka Pulley] Dark Bluish Gray Part 4185 Element 6321744 or 4587275 ×4
  • Tile 2 x 2 with Groove Dark Bluish Gray Part 3068b Element 4211055 ×2
  • Wheel 31 x 15 Technic, 7 Pin Holes Dark Bluish Gray Part 60208 Element 4549886 ×5

Red 44 pieces

  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×14
  • Technic Axle 6 Red Part 3706 Element 6130002 or 4191526 ×3
  • Technic Axle Connector Smooth [with x Hole + Orientation] Red Part 59443 Element 4513174 ×6
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×9
  • Technic Changeover Catch - + opening Red Part 6641 Element 6099696 or 4270473 ×2
  • Technic Gear 16 Tooth with Clutch on Both Sides Red Part 18946 Element 6100930 ×10

Orange 23 pieces

  • Brick Round 2 x 2 Dome Top, Hollow Stud Orange Part 30367c Element 4532970 or 4125257 ×2
  • Technic Beam 1 x 13 Thick Orange Part 41239 Element 4629802 or 4164424 ×3
  • Technic Beam 1 x 7 Thick Orange Part 32524 Element 6339024 or 6102621 ×4
  • Technic Panel 3 x 11 x 1 Orange Part 15458 Element 6339023 or 6102612 ×2
  • Technic Panel 5 x 11 x 1 Orange Part 64782 Element 4580014 ×1
  • Technic Panel Curved 11 x 3 with 2 Pin Holes through Panel Surface Orange Part 62531 Element 4580022 ×6
  • Technic Panel Fairing # 3 Small Smooth Long, Side A Orange Part 64683 Element 6601288 or 6285295 ×1
  • Technic Panel Fairing # 4 Small Smooth Long, Side B Orange Part 64391 Element 6601286 or 6285294 ×1
  • Technic Panel Fairing #1 Small Smooth Short, Side A Orange Part 87080 Element 6370445 or 6303434 ×1
  • Technic Panel Fairing #2 Small Smooth Short, Side B Orange Part 87086 Element 6370444 or 6303436 ×1
  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Orange Part 41669 Element 4281515 or 4175219 ×1

Tan 22 pieces

  • Technic Axle 4 with Centre Stop Tan Part 99008 Element 4666999 ×1
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×4
  • Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] Tan Part 18575 Element 6346517 or 6084724 ×1
  • Technic Pin 3/4 Tan Part 32002 Element 6663097 or 6013938 1 spare in the box ×6
  • Technic Pin Long without Friction Ridges Tan Part 32556 ×10

Yellow 21 pieces

  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Yellow Part 15573 Element 6092583 ×1
  • Technic Axle 5 Yellow Part 32073 Element 6130008 ×8
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×12

Dark Tan 16 pieces

  • Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×5
  • Technic Axle 5 with Stop Dark Tan Part 15462 Element 6055631 ×11

Trans-Red 3 pieces

  • Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye Trans-Red Part 58176 Element 6507867 or 6171762 ×2
  • Tile Round 1 x 1 Trans-Red Part 98138 Element 6514189 or 6258607 1 spare in the box ×1

Flat Silver 2 pieces

  • Tile Round 1 x 1 with Gauge and Red Pointer Print Flat Silver Part 98138pr0012 Element 6287877 or 6030333 1 spare in the box ×2

Green 2 pieces

  • Technic Panel 3 x 11 x 1 Green Part 15458 Element 6619981 or 6439556 ×2

Trans-Clear 2 pieces

  • Tile Round 1 x 1 Trans-Clear Part 98138 Element 6514191 or 6274738 1 spare in the box ×2

Trans-Green 1 piece

  • Tile Round 1 x 1 Trans-Green Part 98138 Element 6514194 or 6274742 1 spare in the box ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 42052-1 [No Color/Any Color] Part 25692 Element 6142231 ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

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