＜The Main Instrument Approach Procedure＞

The instrument approach procedure is a series of maneuvers defined such as flight path and altitude for encouraging the orderly arrival flow of aircraft under instrument flight rules, which is required for a safety landing, even though the bad weather exists. For example, there are instrument approach procedures using ILS or satellites. Each procedure ensures safety based on international standards. It is improved a service rate that setting procedures on a basis of weather characteristics and topography around an airport. ＜The main instrument approach procedure＞ ILS approach LOC RNAV approach GPS GS T-DME If the pilot could have visual objects insightand recognize them by the Minimum Descent Altitude approach limitaltitude, he can continue the approach for landing. ＜summary ＞＜summary ＞ Minimum Descent Altitude ILS approach procedure is a landing procedure using RNAV approach procedure is a landing procedure using precision guidance radio waves from the ground facilities. an artificial satellite. Although the approach limit altitude Even though it is only allowed to set a straight course, it has is higher than ILS approach, there isn’t affected by low approach limit altitude, which allows an aircraft to ground facilities and topographic characteristics, which continue an approach till low altitude when it is under the bad allows to set flexible flight routes such as a curve. It is weather condition. The approach limit differs according to a called that RNP approach or RNP AR approach that it’s category of ILS. If it is higher category of ILS, it has lower required high performance of navigation. approach limit. ILS approach ＜How it works＞ RNAV approach Receive induction radio waves from the ground (LOC, Location information T-DME) Based on a signal from the GPS, on-board computer to calculate Receive induction radio waves from the ground (GS) Angle information ＜Introduction Airport＞ Obtained from altimeter onboard Altitude information Obtained from altimeter onboard ＜Introduction Airport＞ Classification Introduction Airport Classification Introduction Airport Rishiri、Shonai、Hachijojima、Oshima、Toyama、Tajima、Izumo、Oki、Tsushima、Fukue、 LOC/T-DME New chitose、Hakodate、Sendai、Tokyo、Narita、Niigata、Komatsu、Nagoya、Chubu、 Osaka、Kansai、Miho、 RNAV approach Tokunoshima、Nanki-Shirahama、Kumejima、Yonaguni Hiroshima、Tokushima、Fukuoka、Oita、Nagasaki、Kagoshima、Naha、Miyako、Shimojishima、Ishigaki Wakkanai、Monbetsu、Memanbetsu、Asahikawa、Nakashibetsu、Kushiro、New Chitose、 Obihiro、Hakodate、Aomori、Odate、 Akita、Hanamaki、Yamagata、Sendai、Niigata、Shonai、 Rishiri、Okushiri、Asahikawa、Sapporo、Kushiro、Hanamaki、Akita、Shonai、Yamagata、Fukushima、Chofu、 Niijima、Kouzushima、Toyama、Fukui、Tajima、Nanki-Shirahama、Oki、 Izumo、Tsushima、Amakusa、 Fukushima、Hyakuri、Narita、Tokyo、Shizuoka、Chubu、Nagoya、Noto、Komatsu、Kansai、 RNP approach CAT-Ⅰ Tanagashima、Tanegashima、Yakushima、Amami、 Kikai、Tokunoshima、Okierabu、Yoron、Kitadaito、 Osaka、Kobe、Hiroshima、Okayama、Ube、Iwami、Miho、Tottori、Takamatsu、Matsuyama、 Minamidaito、Tarama、Yonaguni Kochi、Tokushima、Fukuoka、Saga、Kitakyushu、Nagasaki、Oita、Kumamoto、Miyazaki、 Wakkanai、Memanbetsu、Kushiro、Monbetsu、Nakashibetsu、Asahikawa、Obihiro、Hakodate、Aomori、Odate、 Kagoshima、Tanegashima、Amami、Naha、Miyako、Ishigaki、Shimojishima Akita、Sendai、Shonai、Tokyo、Hachijojima、Shizuoka、Noto、Matstumoto、Toyama、Hiroshima、Iwami、 RNP AR approach CAT-Ⅱ New Chitose、Aomori、Narita、Tokyo、Chubu、Kansai、Kumamoto Tottori、Matsuyama、Kochi、Okayama、Ube、Kitakyushu、Saga、Oita、Kumamoto、Miyazaki、Amami、Miyako、 CAT-Ⅲ New Chitose、Kushiro、Aomori、Narita、Tokyo、Chubu、Hiroshima、Kumamoto Ishigaki As of April 1 , 2021.

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