香港至日本之 Ｍ－７５０ 航路跨越台灣。 The M-750 air route from Hong Kong to Japan straddles Taiwan [Inexact map 台北飛航情報區航路圖 (387 kb)], crossing cities such as Dali, Taiping, Dongshi, and the 4th Nuclear Power Plant.
此Ｍ－７５０國際航線沿著
| 縣市 County/City | 直接經過 Directly passes | 週邊 Skirts |
|---|---|---|
| 雲林縣 Yunlin Co. | 外傘頂洲、 口湖、 四湖、 東勢、 崙北 Waisandingzhou, Kouhu, Sihu, Dongshi, Lunbei | |
| 彰化縣 Zhanghua Co. | 竹塘、 埤頭、 埔心、 員林 Zhutang, Bitou, Puxin, Yuanlin | |
| 台中縣 Taizhong Co. | 大里、 太平、 新社、 東勢 Dali, Taiping, Xinshe, Dongshi | 霧峰 Wufeng |
| 台中市 Taizhong City | 大坑 Dakeng | 他區 etc. |
| 苗栗縣 Miaoli Co. | （山區） (Mountain area) | |
| 新竹縣 Xinzhu Co. | ||
| 桃園縣 Taoyuan Co. | ||
| 台北縣 Taibei Co. | 烏來、 坪林、 雙溪 Wulai, Pinglin, Shuangxi | 核四 4th Nuclear Power Plant |
於山上， 或都市深夜， Ｍ－７５０的噪音很明顯， 又每幾分鐘， 日夜不休。 反正增加國人總噪音量。 地氣壓天聲音也許更大（？）
In the countryside, or in the city late at night, M-750's presence is very noticeable. At least it adds to the total citizen noise exposure along its 24-hour a day route. Perhaps on days of low atmospheric pressure the sound is louder(?)
美國政府為例， 只以五公里以下之飛機為噪音源， 但Ｍ－７５０之飛機飛十多公里高。 However, governments such as the USA only have regulations on noise from planes below 18000 ft. (5486 m), however planes on M-750 are mainly 30000-40000 ft. (9-12 km) high.
Ｍ－７５０航線何必跨過人住的地方？ 大概１９９６年啟用時， 無人考慮到。
I don't suppose noise was a consideration when M-750 was opened in 1996. It would be best if M-750 were located instead over the sea where nobody lives.
Ｍ－７５０不像與其平行的Ａ－１航線， 沿途設導航硬體。 移Ｍ－７５０全部可由軟體。
Unlike the parallel A-1 airway, the are no navigation beacons, etc. hardware installed along M-750. If M-750 were to be realigned, it could be done all in software.
可以說Ｍ－７５０大部分只是過境班次， 不服務本國人。 而未來高鐵將吸收國內空運， 留此Ｍ－７５０在頭上更明顯。
It could be said that most of M-750 is for planes just transiting Taiwan -- not in service of the Taiwan people. Indeed, much local air traffic should be absorbed by the high speed rail soon, leaving this M-750 even more obvious overhead.
Ｍ－７５０與Ａ－１平行， 相聚二十浬（３７公里）。 若將Ｍ－７５０由Ａ－１之東南面挪到其西北面， 仍離台灣海峽中央線至少二十八浬（５２公里）。
屆時，移那麼遠， 當然應該編新航路編號。
M-750 and A-1 are parallel, separated by 20 nautical miles (37 km). If we take M-750 from A-1's southeast, and move it to A-1's northwest, M-750 will still have 28 nautical miles (52 km) distance from the center line of the Taiwan Strait, at minimum. Of course after so far a move, a new route number should be issued.
我問民航局有無航量統計， 但他們沒有。 其實要做統計可以坐著數飛機， 或聽無線電：
I asked the Taiwan CAA for statistics on this route, but they had none. One could make their own statistics though, by counting planes all day, or listening to radio: I can hear the planes check in with Taibei air traffic control as they enter the Taibei Flight Information Region at ENVAR, 117.5 E. 22 deg N. on 129.1 MHz etc. I can estimate the time they will cross me from the estimated time pilots give on the radio to reach MOLKA, 124 deg E. 26.7 deg N., as I live at the halfway point between ENVAR and MOLKA. So I just halve that estimate.
One can often hear "request 10 (nautical) miles right/left of track due to weather". This could explain the occasional plane to the east of me.
One day I might try a program to read the ACARS identification signals sent from the planes.
本人中台灣住處離之僅幾公里。 M-750 passes a few kilometers from where I live in central Taiwan.
經我北方 （Passing north of me） 由飛機經過的星計算其高度 Finding plane's elevation from stars.
Last modified: 2006-09-29 17:20:30 +0800
