In this Instructable, I will teach you how to make a helicopter in MCPE. It's a good model for an adventure map (in PC) or just to show off your Minecraft skills.
Step 1: Chose the World
Step 2: Get Materials
All that is in my inventory is what you need. You can use any block that has a block form, a slab form, and a stair form instead of cobblestone, or use cobblestone. Also, you will need glowstone.
Step 3: Build a Tower 1 Block Up, 5 Blocks Tall, and Cover the Front With Ladders
Step 4: Surround the Top With Slabs As Shown
Step 5: Go Back 2 Slabs and Forward 3 Slabs
Step 6: Surround Slabs With Stairs As Shown
Step 7: Place Blocks As Shown
Step 8: Place Stairs Around Edge and Slabs Inside Them
Step 9: Place Columns 2 and 3 Blocks Tall and Surround Bottom With Stairs
Step 10: Place Nether Reactor Cores on the Tops and Surround Them With Stairs As Shown
Step 11: Place Slabs on Stairs 2 Out
Step 12: Make the L Shape As Shown
Step 13: Make a + With Nether Cores
Step 14: Place Stair 1 Block From Front on Inside
Step 15: Place Upside Down Stairs Under the Body As Shown
Step 16: Place Front Facing Stairs on the Upside Down Ones
Step 17: Place Cobblestone Under All Stairs
Step 18: Place Slabs Connecting to the Cobblestone As Shown
Step 19: Make This Shape With Cobblestone at the Front
Step 20: Place Glowstone on Front
Step 21: Your Done!
The pictures show the helicopter from different angles (That's my sister in the last one :D)