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In aviation, a touch-and-go landing or circuit is a maneuver that is common when learning to fly a fixed-wing aircraft. It involves landing on a runway and taking off again without coming to a full stop. Usually the pilot then circles the airport in a defined pattern known as a circuit and repeats the maneuver. This allows many landings to be practiced in a short time.〔(Teaching Touch And Goes (sic) )〕 If the pilot brings the aircraft to a full stop before taking off again then it is known as "stop-and-go". Touch-and-go landings are also crucial when a plane lands with not enough space to come to a complete stop, but has enough space to accelerate and take off again to carry out a go-around. ==Standard procedure== The standard circuit begins with a roll on the runway until the aircraft rotates (nose pitches up), a climb to 500 feet above runway/field elevation (AGL), a right or left climbing turn (depending on making either right hand or left hand circuits) to a course perpendicular to the runway, continuing to gain altitude to TPA (traffic pattern altitude) (typically 1000 feet AGL), followed by another right or left turn for a downwind leg parallel to the runway, maintaining TPA. During the downwind leg the pilot performs pre-landing checks, contacts the control tower requesting a full-stop landing, a touch-and-go, "stop-and-go", or "the option", and when cleared to land, descends to 800 feet AGL. After seeing the threshold of the runway at 45 degrees behind him/her, the pilot makes another descending left or right turn to 500 feet AGL. The pilot then turns on the last leg, the final approach at which time clearance to land or for a touch-and-go must be received. In an non-towered airport, the pilot announces position and intent over the CTAF or UNICOM radio frequency to coordinate the flow of local air trafic with any other pilots. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Touch-and-go landing」の詳細全文を読む スポンサード リンク
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