Down in your sentence is an adverb telling where.
"Down" in the sentence given is an adverb of direction and modifies the verb "came".
The plane came down later tha expected. In this sentence, what part of speech is the word DOWN
Plane is the simple subject.
There is no preposition in the sentence "The plane was late." The - article plane - noun (subject) was - linking verb late - predicate adjective
A coordinate plane for 6 is -4,4
the bush plane on the plane were take off
by plane
The inclined plane is a simple machine.
The PLANE flew over the house
The plane.
Inclined is an adjective and plain is a noun.
Following the mother lode will require an incline plane.