ER stands for Extended Range These aircraft types that is identified by 'ER' are aircraft models that is enhanced for better efficiency at long range flights than its counterpart aircraft of the same model. Source(s): Aerospace Engineer - Aviation Enthusiast
exists and is an alternate of . The difference is that windward gets more rain, is wetter, and is the side of the mountain that is closest to the ocean. On the other hand the leeward is the farthest from shore and is drier but still gets rain.
The Leeward Islands make up the northern part of the Lesser Antilles chain. The Puerto Rican Virgin Islands contain two islands: Vieques and Culebra. Four of the islands that compose the U.S. Virgin Islands are St. Thomas, St. John, St. Croix and Water Island.