Dream about going down in a plane is a harbinger for regret in something you did. You are repressing or denying a vital aspect of your expression. You need to let go of some unnecessary burden. The dream points at an internal conflict. You want to keep an idea hot or a project on track.
Going down in a plane dream is a hint for anger, spite and contempt. You feel that you are unable to hold your own or stand up for yourself. You are not picking up on certain cues. The dream is an omen for some guilt that you are suppressing and refusing to acknowledge. You are trying to recapture your innocence in some way.
If you dreamt about going down in a plane:
You may have had certain ideas or even a date arranged, yet it will not turn out as you imagined. Events may happen as if out of the blue, but may in fact lead to a more positive and exciting relationship. Be prepared to go with the flow.