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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.

Red Cross Helicopter

Checking

6691 Red Cross Helicopter

99 pieces in 51 part and color combinations, plus 2 minifigures.

The official piece count includes the 8 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

Plates 41 pieces

  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×4
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×12
  • Plate 1 x 8 Light Gray Part 3460 Element 346002 ×4
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×1
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 1 x 4 Red Part 3710 Element 371021 ×6
  • Plate 1 x 6 Red Part 3666 Element 366621 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×1
  • Plate 2 x 6 Red Part 3795 Element 379521 ×1
  • Plate 4 x 12 Red Part 3029 Element 4514717 or 302921 ×1
  • Plate 1 x 1 Trans-Red Part 3024 Element 6513963 or 6252042 ×2
  • Plate 2 x 10 White Part 3832 Element 6552109 or 383201 ×1
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×2
  • Plate 4 x 6 White Part 3032 Element 303201 ×1

Bricks Sloped 15 pieces

  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×4
  • Brick Sloped 33° 3 x 2 Red Part 3298 Element 329821 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin Red Part 3040b Element 4121934 or 304021 ×3
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Red Part 3747a Element 374721 ×2
  • Brick Sloped Inverted 45° 2 x 1 Red Part 3665 Element 366521 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×2
  • Brick Sloped 45° 2 x 4 White Part 3037 Element 6552102 or 303701 ×1
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin White Part 3747a Element 374701 ×1

Bricks 10 pieces

  • Brick 1 x 6 Black Part 3009 Element 300926 ×2
  • Brick 1 x 1 Red Part 3005 Element 300521 ×1
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×1
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×1
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×1
  • Brick 1 x 3 White Part 3622 Element 6550143 or 362201 ×2
  • Brick 1 x 8 White Part 3008 Element 6550134 or 300801 ×1
  • Brick 2 x 8 White Part 3007 Element 6619309 or 6033776 ×1

Plates Special 7 pieces

  • Plate Special 1 x 2 with Handles [Round Ends, Mid Attachment] Light Gray Part 3839a ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) White Part 3794a ×5

Tiles 7 pieces

  • Tile 1 x 2 with Groove Light Gray Part 3069b Element 306902 ×1
  • Tile 2 x 2 with Groove Light Gray Part 3068b Element 306802 ×4
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×2

Transportation - Sea and Air 6 pieces

  • Engine - Smooth, Small 1 x 2 Side Plate [No Axle Holders] Black Part 3475a ×2
  • Propeller 4 Blade 5 Diameter with Hole for Rotor Holder Light Gray Part 3461 ×2
  • Plate Special 2 x 2 with Helicopter Tail Rotor Holder Red Part 3481 ×1
  • Plate Special 2 x 3 with Helicopter Rotor Holder Red Part 3462 ×1

Windows and Doors 5 pieces

  • Window 1 x 4 x 3 Red Part 3853 Element 385321 ×1
  • Door 1 x 3 x 1 Left White Part 3822 Element 4527637 or 4161547 ×1
  • Door 1 x 3 x 1 Right White Part 3821 Element 4537987 or 4527638 ×1
  • Window 1 x 2 x 3 Shutter White Part 3856 Element 4177767 or 385601 ×2

Panels 3 pieces

  • Panel 1 x 4 x 3 with Red Cross and Stripe Print White Part 4215apr0002 ×2
  • Panel 1 x 4 x 3 with Red Stripe Print White Part 4215apr0003 ×1

Hinges, Arms and Turntables 2 pieces

  • Hinge Vehicle Roof 4 x 4 White Part 4213 Element 4256454 or 421301 ×1
  • Hinge Vehicle Roof Holder 1 x 4 x 2 White Part 4214 Element 421401 ×1

Bars, Ladders and Fences 1 piece

  • Fence Lattice 1 x 4 x 1 Red Part 3633 Element 4187280 or 363321 ×1

Transportation - Land 1 piece

  • Steering Stand 1 x 2 with Black Steering Wheel White Part 3829c01 Element 4208543 or 9551 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 2 x 4 x 2 Trans-Clear Part 3823 Element 6581801 or 6253681 ×1

Minifigures 2 figures

  • Doctor, White Jacket with Red Cross, White Legs, Red Helmet Minifigure, checked as a whole figure ×2

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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