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
The Windward Islands and the Leeward Islands are part of the Lesser Antilles of the Caribbean Sea. The Windward Islands are southeastern islands of the Caribbean. Theyâre called the Windward Islands because theyâre exposed to the wind (âwindwardâ) of the northeast trade winds (northeasterlies). Martinique.
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.