The cake we made was based on a tutorial from Dykstra Dash with a couple of minor modifications: Dykstra Dash: How to make an Airplane Cake
This is the cake before we decorated it.
I cut my wings slightly thinner and also made up a propeller. We used chocolate cream cheese frosting to sandwich things together and then just some whipped cream with some blue food colouring to cover the plane and whipped cream with black food colouring for the propeller. I used some tubes of icing for the finer detail (although this didn't really work too well) and m&ms for lights.
This was definitely a super easy cake to make - the hardest part was making the cake! I ended up having to make 3 sponges because my FIL ate one of the tail wings whilst I was out of the house =/
Happy Birthday my little man =) I look forward to many more!