BlockTalk Find Your Set

Free tool

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.

Desert Biplane

Checking

4778 Desert Biplane

104 pieces in 57 part and color combinations, plus 1 minifigure.

The piece count includes the 5 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.

Show

Piece checklist

Yellow 32 pieces

  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×2
  • Brick Sloped 45° 2 x 2 Yellow Part 3039 Element 303924 ×2
  • Brick Sloped 45° 2 x 4 Yellow Part 3037 Element 4219911 or 303724 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Yellow Part 3660 Element 366024 ×1
  • Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 Recessed Yellow Part 4854 Element 4258394 or 485424 ×2
  • Brick Wedged, Sloped 45° 4 x 2 Left Yellow Part 43721 Element 4262785 or 4179093 ×1
  • Brick Wedged, Sloped 45° 4 x 2 Right Yellow Part 43720 Element 4262782 or 4179092 ×1
  • Brick Wedged, Sloped Inverted 4 x 4 Triple [2 Connections between Front Studs] Yellow Part 4855 Element 4262136 or 485524 ×1
  • Brick Wedged, Sloped Inverted 6 x 4 with 2 Stud Connections Yellow Part 4856a Element 4270871 or 4114164 ×1
  • Panel 1 x 1 x 1 Corner Yellow Part 6231 Element 4201587 or 4113238 ×2
  • Panel 1 x 2 x 1 [Square Corners] Yellow Part 4865a Element 486524 ×4
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×2
  • Plate 1 x 6 Yellow Part 3666 Element 366624 ×2
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Yellow Part 4032a Element 403224 ×1
  • Slope 45° 4 x 4 Double with Locking Hinge Yellow Part 44571 Element 4522127 or 4270873 ×1
  • Technic Cylinder 4 x 4 with Pin Holes and Centre Bar, Closed Sides on Bar Yellow Part 41531 Element 6100888 or 4270872 ×1
  • Tile Round 2 x 2 with Bottom Cross Yellow Part 4150 Element 415074 or 415024 ×4
  • Wedge Plate 3 x 4 with Stud Notches Yellow Part 48183 Element 4240007 or 4215977 ×1

Reddish Brown 27 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Reddish Brown Part 54200 Element 4504376 or 4260486 ×2
  • Minifig Neckwear Backpack Non-Opening Reddish Brown Part 2524 Element 6268828 or 4598713 ×1
  • Plate Round 1 x 1 with Solid Stud Reddish Brown Part 6141 Element 4216581 1 spare in the box ×8
  • Plate Special 2 x 2 with Towball Reddish Brown Part 3729 Element 4251140 ×1
  • Plate Special 2 x 4 with Pins Reddish Brown Part 30157 Element 4270882 or 4211217 ×1
  • Tail Old Reddish Brown Part 3587 Element 4269909 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Reddish Brown Part 2412b Element 4224243 ×1
  • Wedge Plate 12 x 3 Left Reddish Brown Part 47397 Element 6503734 or 6035545 ×4
  • Wedge Plate 12 x 3 Right Reddish Brown Part 47398 Element 6503735 or 6035538 ×4
  • Wedge Plate 4 x 4 Cut Corner Reddish Brown Part 30503 Element 4224732 ×2
  • Wing, Tail 4 x 1 x 3 Reddish Brown Part 2340 Element 4270885 or 4245597 ×2

Black 18 pieces

  • Hinge Tile 1 x 4 Locking Dual 1 Fingers on Top [4 Locking Ridges] Black Part 44822 Element 4193108 ×1
  • Plate 1 x 1 Black Part 3024 Element 302426 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×5
  • Plate 2 x 4 Black Part 3020 Element 302026 ×4
  • Propeller 3 Blade 9 Diameter Black Part 30332 Element 4142731 ×1
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×1
  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×2

Light Bluish Gray 13 pieces

  • Equipment Binoculars Light Bluish Gray Part 30162 Element 4550170 or 4212313 ×1
  • Exhaust Pipe with Technic Pin Light Bluish Gray Part 40620 Element 4263192 ×2
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Light Bluish Gray Part 6019 Element 4211518 ×4
  • Seat / Chair 2 x 2 Light Bluish Gray Part 4079 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Light Bluish Gray Part 3700 Element 4211440 ×2
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×2

Dark Bluish Gray 9 pieces

  • Bar 1L with Clip Dark Bluish Gray Part 48729a Element 4222196 ×1
  • Brick Special 1 x 2 with Handle Dark Bluish Gray Part 30236 Element 4211128 ×1
  • Equipment Sextant Dark Bluish Gray Part 30154 Element 6269999 or 4217675 ×1
  • Equipment Shovel [Rounded Handle End] Dark Bluish Gray Part 3837 Element 4211006 ×1
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Dark Bluish Gray Part 3839b Element 4263176 ×1
  • Technic Axle 5.5 with Stop [Flat Short End] Dark Bluish Gray Part 32209 Element 4263624 ×1
  • Tool Pickaxe Dark Bluish Gray Part 3841 Element 4211007 ×1
  • Wheel Spoked 2 x 2 with Pin Hole Dark Bluish Gray Part 30155 Element 4211091 ×2

Red 2 pieces

  • Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder Red Part 30367b Element 4185891 ×1
  • Plate 2 x 10 Red Part 3832 Element 383221 ×1

Trans-Clear 2 pieces

  • Brick 1 x 2 without Bottom Tube Trans-Clear Part 3065 Element 6514262 or 6244904 ×2

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 4778-1 [No Color/Any Color] Part 53466 Element 4270894 ×1

Minifigures 1 figure

  • Pilot, Open Black Jacket over Dark Gray Vest and Tie, Black Hat with Goggles 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.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy