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.
Sometimes the synonyms downwind (same as leeward) and upwind (same as windward) are used instead. They are also widely used on the islands of Hawaii to give directions or describe locations. The tropics on earth have pretty constant east-ish winds, caused by solar heating and the rotation of the earth.