Helicopter

What there is most of

• Plate 1 x 4 · Yellow×3
• Brick Sloped 45° 2 x 1 with Bottom Pin · Yellow×2
• Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] · Yellow×2
• Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders] · Black×2
• Plate 1 x 2 · Yellow×2
• Plate 1 x 6 · Black×2
• Plate 2 x 2 · Black×2
• Brick Sloped 45° 2 x 2 · Yellow×1
• Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin · Yellow×1
• Brick Special 1 x 2 with Pin · Yellow×1
• Hinge Brick 2 x 2 Locking with 1 Finger Vertical and Axle Hole [+ Opening] · Yellow×1
• Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth · Yellow×1
• Plate 2 x 6 · Dark Bluish Gray×1
• Plate Special 2 x 2 with Grills · Yellow×1
• Propeller 3 Blade 5.5 Diameter with Hole for Technic Pin · Black×1
• Propeller 3 Blade 9 Diameter · Black×1
• Tile Special 2 x 2 with Top Pin · Yellow×1
• Windscreen 5 x 2 x 1 2/3 · Trans-Brown×1

The twenty most numerous parts, longest bar first. Start a checklist to see all 18 part types and tick them off as you find them.