Can you recline in your airplane seat? Yes, it has the ability, but SHOULD you recline in your airplane seat? NO!
From usatoday.com, "Two domestic airlines already limit your ability to lean back in economy class. Even if the airline doesn't make the decision for you, it's the polite thing to do. And, most important, it's the right thing to do. "Seat reclining is one of the most irritating, inconvenient, self-indulgent habits," says Simon Sapper, an organizational consultant and frequent traveler based in London. "Period." The fact of the matter is that there simply is just no room to recline and it's rude, so stop it. More here