✈️ Boeing 747 Jumbo Jet (United States): step-by-step build

The Queen of the Skies: a Technic-beam jumbo jet with its famous hump, four engines and a tall tail.

Here comes the jumbo! The Boeing 747 was the first giant wide-body airliner, and everyone knows it by the hump on top where the upper deck is. This is a Technic-parts model inspired by it, not a real aeroplane: four white engines hang under swept-back wings, each held by two L-beam pylons, and the nose wheel and main wheels roll when you push it.

• Level 3 of 5 (medium)
• About 45 minutes
• 29 steps, 86 parts
• Powered by: Push
• Series: Aircraft from 21 Countries

What you will learn

• Pins: Grippy or Smooth: Pins join beams together — some hold tight, some let things swing.
• Triangles Are Strong: A triangle cannot be squished — a square can.
• Axles & Wheels: A wheel on an axle turns dragging into rolling.

Parts you need

• 1 × Beam 15
• 20 × Blue long pin
• 1 × Beam 11
• 7 × L-beam 3×5
• 25 × Black pin (grippy)
• 1 × Beam 13
• 1 × Boomerang beam 3×7
• 8 × L-beam 2×4
• 8 × Beam 5
• 2 × Beam 7
• 6 × Beam 3
• 1 × Axle 6
• 3 × Train wheel
• 1 × Axle 3
• 1 × Bush

Steps

1. Lay the floor of the fuselage: take a blue 15-hole beam, then push 2 blue long pins in and press a blue 11-hole beam onto them.
2. Lay the floor of the fuselage: push 2 blue long pins in and press a blue 3×5 L-beam (short leg down: the nose-wheel leg) onto them.
3. Add the roots of the wings and tailplanes: push 1 blue long pin in and press a blue 3×5 L-beam (short leg up) onto them.
4. Add the roots of the wings and tailplanes: push 2 blue long pins in and press a blue 3×5 L-beam (short leg up) onto them.
5. Add the roots of the wings and tailplanes: push 2 blue long pins in and press a light grey 3×5 L-beam (short leg down: a landing-gear leg) onto them.
6. Add the roots of the wings and tailplanes: push 2 blue long pins in and press a light grey 3×5 L-beam (short leg down: a landing-gear leg) onto them, then slide a white 3×5 L-beam (short leg up beside the hump) onto the blue pins that stick out.
7. Add the roots of the wings and tailplanes: push 1 black pin and 1 blue long pin in and press a white 3×5 L-beam (short leg up beside the hump) onto them.
8. Build the upper deck and the famous hump: push 2 black pins in and press a white 13-hole beam onto them.
9. Build the upper deck and the famous hump: push 2 black pins in and press a blue boomerang beam (its bent end leans back: the tail fin) onto them.
10. Build the upper deck and the famous hump: push 2 black pins in and press a white 2×4 L-beam (short leg up) onto them.
11. Build the upper deck and the famous hump: push 2 black pins in and press a white 2×4 L-beam (short leg up) onto them.
12. Build the upper deck and the famous hump: push 2 black pins in and press a white 5-hole beam (the top of the hump) onto them.
13. Build the upper deck and the famous hump: push 2 black pins in and press a blue 5-hole beam leaning back along the tall fin onto them.
14. Build the tailplanes: push 2 black pins in and press a light grey 5-hole beam onto them.
15. Build the tailplanes: push 1 black pin in and press a light grey 5-hole beam onto them.
16. Build the right wing and hang its engines: slide a light grey 5-hole beam onto the blue pins that stick out, then push 1 black pin in and press a light grey 2×4 L-beam (short leg down: an engine pylon) onto them.
17. Build the right wing and hang its engines: push 1 black pin and 1 blue long pin in and press a light grey 7-hole beam onto them.
18. Build the right wing and hang its engines: push 1 black pin in and press a white 3-hole beam (an engine) onto it.
19. Build the right wing and hang its engines: push 2 blue long pins in and press a light grey 2×4 L-beam (short leg down: an engine pylon) onto them.
20. Build the right wing and hang its engines: push 1 blue long pin in and press a light grey 3-hole beam onto them, then slide a light grey 5-hole beam onto the blue pins that stick out, then slide a white 3-hole beam (an engine) onto the blue pins that stick out.
21. Build the right wing and hang its engines: push 2 black pins in and press a light grey 2×4 L-beam (short leg down: an engine pylon) onto them.
22. Build the left wing and hang its engines: slide a light grey 5-hole beam onto the blue pins that stick out, then slide a light grey 2×4 L-beam (short leg down: an engine pylon) onto the blue pins that stick out.
23. Build the left wing and hang its engines: push 1 black pin and 1 blue long pin in and press a light grey 7-hole beam onto them.
24. Build the left wing and hang its engines: push 1 black pin in and press a white 3-hole beam (an engine) onto it.
25. Build the left wing and hang its engines: push 2 blue long pins in and press a light grey 2×4 L-beam (short leg down: an engine pylon) onto them.
26. Build the left wing and hang its engines: push 1 blue long pin in and press a light grey 3-hole beam onto them, then slide a light grey 5-hole beam onto the blue pins that stick out, then slide a white 3-hole beam (an engine) onto the blue pins that stick out.
27. Build the left wing and hang its engines: push 2 black pins in and press a light grey 2×4 L-beam (short leg down: an engine pylon) onto them.
28. Put on the wheels: push a 6-long axle through both legs and put a wheel on each end.
29. Put on the wheels: push a 3-long axle through the leg, with a wheel on one side and a bush on the other.

Play time

Taxi the jumbo to the runway, then count its four engines and find the hump!

Real-world inspiration

Boeing 747, the American four-engine wide-body airliner with the upper-deck hump (first flown 1969).

Credited demonstrations and component sources

• Boeing 747 — Wikipedia: Public reference for the real aircraft's shape and colours; this is a Technic-parts model inspired by it, not a flying or tested replica.