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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-Duty Helicopter

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4439 Heavy-Duty Helicopter

377 pieces in 122 part and color combinations, plus 3 minifigures.

The official piece count includes the 16 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.

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Piece checklist

White 86 pieces

  • Brick 1 x 2 x 2 with Inside Stud Holder White Part 3245c Element 6550139 or 4113261 ×2
  • Brick 1 x 8 White Part 3008 Element 6550134 or 300801 ×1
  • Brick Arch 1 x 3 x 2 White Part 88292 Element 4568956 ×4
  • Brick Curved 4 x 4 x 2 with Holes White Part 61487 Element 6296243 or 4519129 ×6
  • Brick Curved 8 x 8 x 2 Double White Part 54095 Element 4284006 ×2
  • Brick Round Corner 3 x 3 x 2 Dome Top White Part 88293 Element 4586275 ×4
  • Brick Sloped 30° 1 x 2 x 2/3 White Part 85984 Element 6550189 or 4547489 ×1
  • Brick Special 1 x 2 with Pin White Part 2458 Element 4160228 or 245801 ×2
  • Cupboard 2 x 3 x 2 with Hollow Studs White Part 92410 Element 4619665 ×2
  • Dish 3 x 3 Inverted [Radar] White Part 43898 Element 4179580 ×2
  • Engine Smooth Large [2 x 2 Thin Top Plate] White Part 4868b Element 4654622 or 4579345 ×2
  • Plate 1 x 12 White Part 60479 Element 6552130 or 6548269 ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×16
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×3
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×2
  • Plate 2 x 16 White Part 4282 Element 6609534 or 4119227 ×2
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×3
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×3
  • Plate Round Corner 3 x 3 White Part 30357 Element 6550165 or 4550745 ×2
  • Plate Special 1 x 2 with Door Rail White Part 32028 Element 6550168 or 4249563 ×6
  • Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes White Part 92593 Element 4597131 ×2
  • Plate Special 1 x 8 with Door Rail White Part 4510 Element 6619290 or 4501853 ×1
  • Technic Plate 1 x 5 with Smooth Ends, 4 Studs and Centre Axle Hole White Part 32124 Element 6280386 or 4527839 ×6
  • Tile 1 x 2 with 'POLICE' White on Blue Background Print White Part 3069bpr0115 Element 4598827 ×1
  • Tile Special 2 x 3 with 2 Clips [Thick Open O Clips] White Part 30350b Element 4599983 or 4142078 ×2
  • Wheel 11 x 12 with Hole Notched for Wheels Holder Pin White Part 6014b Element 4170457 ×6
  • Window 1 x 2 x 3 Flat Front White Part 60593 Element 6468341 or 4536521 ×1

Blue 78 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×8
  • Brick 1 x 3 Blue Part 3622 Element 362223 ×4
  • Brick 1 x 8 Blue Part 3008 Element 300823 ×7
  • Brick 2 x 8 Blue Part 3007 Element 6037384 or 300723 ×1
  • Brick Curved 2 x 3 Blue Part 6215 Element 621523 ×3
  • Brick Sloped 45° 2 x 1 with Bottom Pin Blue Part 3040b Element 4121936 or 304023 ×2
  • Brick Sloped Inverted 45° 2 x 1 Blue Part 3665 Element 366523 ×8
  • Mudguard 2 x 4 with Molded Headlights Blue Part 44674 Element 6207380 or 4527367 ×1
  • Panel 1 x 2 x 2 [Side Supports / Hollow Studs] Blue Part 87552 Element 4586548 ×8
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×2
  • Plate 1 x 8 Blue Part 3460 Element 346023 ×3
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×1
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×4
  • Plate 2 x 8 Blue Part 3034 Element 303423 ×7
  • Plate Special 3 x 2 with Rounded End, Hole Blue Part 3176 Element 317673 or 317623 ×5
  • Tile 1 x 4 with Groove Blue Part 2431 Element 243123 ×2
  • Tile 1 x 8 with Groove Blue Part 4162 Element 416223 ×1
  • Tile 2 x 4 with Groove Blue Part 87079 Element 4654678 or 4560180 ×1
  • Wedge Plate 4 x 4 Cut Corner Blue Part 30503 Element 6503903 or 6331843 ×4
  • Window 1 x 4 x 2 Plane, Hollow Studs, Single Hole Top and Bottom for Glass Blue Part 61345 Element 6207688 or 4651869 ×6

Dark Bluish Gray 70 pieces

  • Brick 1 x 6 Dark Bluish Gray Part 3009 Element 4211100 ×2
  • Brick 2 x 3 Dark Bluish Gray Part 3002 Element 4211105 ×4
  • Brick 2 x 6 Dark Bluish Gray Part 2456 Element 4282819 or 4210875 ×1
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Dark Bluish Gray Part 6091 Element 6411327 or 4210797 ×2
  • Brick Curved 2 x 4 Double, No Studs, with Groove Dark Bluish Gray Part 6192b Element 4590786 ×10
  • Brick Curved 6 x 2 Dark Bluish Gray Part 44126 Element 4210873 ×1
  • Brick Sloped 10° 6 x 8 Dark Bluish Gray Part 4515 Element 6597674 or 4654618 ×1
  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Dark Bluish Gray Part 61409 Element 4540386 or 4521185 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 Dark Bluish Gray Part 85984 Element 4567887 ×8
  • Brick Sloped 33° 3 x 2 Dark Bluish Gray Part 3298 Element 4211106 ×2
  • Brick Sloped Inverted 45° 2 x 1 Dark Bluish Gray Part 3665 Element 4211096 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Dark Bluish Gray Part 3660 Element 4211000 ×2
  • Brick Special 1 x 1 with Stud on 1 Side Dark Bluish Gray Part 87087 Element 4558955 ×8
  • Brick Special 1 x 4 with 4 Studs on One Side Dark Bluish Gray Part 30414 Element 4210725 ×6
  • Brick Special 2 x 4, with 2 x 2 Brick with Top Pin and 1 x 2 Side Plates Dark Bluish Gray Part 30592 Element 6301436 or 6278507 ×2
  • Cupboard 2 x 3 x 2 Door Dark Bluish Gray Part 4533 Element 4210811 ×2
  • Plate 2 x 10 Dark Bluish Gray Part 3832 Element 4210678 ×1
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×4
  • Plate 2 x 6 Dark Bluish Gray Part 3795 Element 4211002 ×1
  • Plate 8 x 16 Dark Bluish Gray Part 92438 Element 4654613 ×1
  • Plate 8 x 8 Dark Bluish Gray Part 41539 Element 4210802 ×1
  • Plate Special 3 x 2 with Rounded End, Hole Dark Bluish Gray Part 3176 Element 4225733 ×4
  • Plate Special 4 x 6 with Trap Door Hinge [Long Pins] Dark Bluish Gray Part 92099 Element 4595710 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Dark Bluish Gray Part 3700 Element 4211111 ×2

Black 57 pieces

  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×3
  • Brick Curved 1 x 3 x 2 Black Part 33243 Element 6616748 or 4582251 ×2
  • Brick Round Corner 3 x 3 x 2 Dome Top Black Part 88293 Element 6600749 or 4609397 ×2
  • Brick Sloped 45° 2 x 2 with Complex Control Panel with Red and Green Lamps Print Black Part 3039pr0015 Element 4551168 ×1
  • Brick Sloped 45° 2 x 2 with Green Radar, Green/Red Buttons and Disk Slot Print Black Part 3039pr0002 Element 4295400 ×1
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Black Part 3747b Element 4500458 or 374726 ×1
  • Brick Special 2 x 4 x 2 with Studs on Sides Black Part 2434 Element 4494850 or 4201520 ×1
  • Equipment Radio [Extended Handle, Compact Speaker Grille] Black Part 3962b Element 396226 ×1
  • Plate Special 2 x 16 with Angled Side Extensions and Hole (Rotor Blade) Black Part 62743 Element 4527604 ×8
  • Propeller 4 Blade 5 Diameter with Rounded Ends, Open Hub Black Part 2479 Element 247926 ×2
  • Technic Gear Rack 1 x 4 Black Part 3743 Element 6457282 or 4205760 ×2
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×6
  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×10
  • Tyre 14 x 4 Smooth Small Single [New Style] Black Part 59895 Element 4516843 or 4507700 ×8
  • Tyre 14 x 6 Solid Smooth Black Part 50951 Element 4246901 ×1
  • Tyre 21 x 12 with Offset Tread Small Wide and Center Band Black Part 87697 Element 6575727 or 4568644 ×6
  • Weapon Lightsaber Hilt with Bottom Ring Black Part 64567 Element 4614712 or 4598897 ×1
  • Wheel 11 x 6 mm with Five Spokes and Silver Print Black Part 50944pr0001 Element 6022424 or 4248538 ×1

Light Bluish Gray 35 pieces

  • Bracket 2 x 2 - 2 x 2 Light Bluish Gray Part 3956 Element 6254807 or 6019212 ×2
  • Brick Special 1 x 2 with Grille Light Bluish Gray Part 2877 Element 4211383 ×2
  • Engine Centre - Smooth Large Light Bluish Gray Part 4869 Element 4211825 ×2
  • Equipment Handcuffs Light Bluish Gray Part 61482 Element 6173615 or 4641048 1 spare in the box ×1
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Light Bluish Gray Part 2654 Element 4278273 or 4276273 ×3
  • Plate Special 1 x 2 [Side Handle Closed Ends] Light Bluish Gray Part 48336 Element 4244627 ×2
  • Plate Special 2 x 2 with Wheel Holder Light Bluish Gray Part 4488 Element 6018081 or 4211496 ×1
  • Plate Special 2 x 2 with Wheel Holders Light Bluish Gray Part 4600 Element 4211504 ×3
  • Pneumatic T-Piece (T Bar) [New Style] Light Bluish Gray Part 4697b Element 4211508 1 spare in the box ×2
  • Technic Pin with Dual Wheels Holder Light Bluish Gray Part 61483 Element 6331440 or 4519013 ×4
  • Tile Special 1 x 2 Grille with Bottom Groove Light Bluish Gray Part 2412b Element 4211350 ×5
  • Wheel 8 x 6 Light Bluish Gray Part 4624 Element 4211506 ×8

Yellow 23 pieces

  • Brick Special 1 x 4 with 4 Studs on One Side Yellow Part 30414 Element 4164073 or 3041424 ×8
  • Brick Special 2 x 2 with Pin and Axle Hole Yellow Part 6232 Element 6347698 or 623224 ×1
  • Lever Small Base with Black Lever Yellow Part 298c02 Element 74156 1 spare in the box ×2
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×4
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×2
  • Plate 4 x 6 Yellow Part 3032 Element 303224 ×1
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Yellow Part 60478 Element 4515367 ×2
  • Seat / Chair 2 x 2 with Center Sprue Mark Yellow Part 4079b Element 407924 ×2
  • Steering Stand 1 x 2 with Black Steering Wheel Yellow Part 3829c01 Element 9553 ×1

Trans-Light Blue 13 pieces

  • Glass for Window 1 x 2 x 2 Flat Trans-Light Blue Part 60601 Element 6524698 or 6514137 ×12
  • Windscreen 5 x 8 x 2 Trans-Light Blue Part 62576 Element 6514294 or 6443870 ×1

Red 8 pieces

  • Brick 2 x 4 Red Part 3001 Element 300121 ×1
  • Brick Special 1 x 1 with Stud on 1 Side Red Part 87087 Element 4558886 ×2
  • Equipment Cup / Mug [Plain] Red Part 3899 Element 389921 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Red Part 3794b Element 379421 ×4

Trans-Yellow 3 pieces

  • Plate 1 x 2 Trans-Yellow Part 3023 Element 6514002 or 6240211 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 1 spare in the box ×1

Trans-Dark Blue 1 piece

  • Tile 1 x 4 with Groove Trans-Dark Blue Part 2431 Element 6510179 or 6252050 ×1

Trans-Green 1 piece

  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 1 spare in the box ×1

Trans-Red 1 piece

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 4439-1 [No Color/Any Color] Part 99222 Element 4649788 ×1

Minifigures 3 figures

  • Policeman, Dark Blue Jacket with Pockets and Badge, White Helmet with Visor, Yellow Life Vest, Orange Sunglasses Minifigure, checked as a whole figure ×1
  • Policeman, Dark Blue Jacket with Pockets and Badge, White Helmet with Visor, Yellow Life Vest, Sunglasses and Wavy Mouth Minifigure, checked as a whole figure ×1
  • Forest Police / Ranger, Dark Tan Shirt with Radio and Badge, Dark Blue Legs, Tan Campaign Hat, Stern Minifigure, 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.

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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