Yahoo 知識+ 將於 2021 年 5 月 4 日 (美國東岸時間) 停止服務,而 Yahoo 知識+ 網站現已轉為僅限瀏覽模式。其他 Yahoo 資產或服務,或你的 Yahoo 帳戶將不會有任何變更。你可以在此服務中心網頁進一步了解 Yahoo 知識+ 停止服務的事宜,以及了解如何下載你的資料。
9 個解答
- ?Lv 77 年前最愛解答
Airplanes don't have odometers like a car does. There is no way to measure distance traveled because the airplane does not fly at a constant speed.
- AcerLv 67 年前
It is not only the hours flown that certifies pilots, it is also passing the knowledge and skills examinations in written, aural and performance. The hours like 20 hours of dual and 20 hours of solo, mean nothing if the training curriculum was not followed that put meaning to those minimum hours.
- 匿名7 年前
It is not a practical way to measure skill. A pilot who has spent 50 hours practising IFR approaches to minimums will have greater skills than some one who has flown 1000 miles straight and level in perfect conditions.
It is not what distance you have flown which counts, it is the skills you have gained in the time you have been flying.
資料來源: Retired Airline Captain - John RLv 77 年前
And how exactly would you measure distance for a training flight where the pilot takes off, spend a couple of hours doing turns around a point, steep turns, slow flight and stalls, then returns to the same airport and spends time in the pattern doing touch and goes?
- GreywolfLv 77 年前
It goes back to the very earliest days of flying, where the hours really did define exactly how much experience you have, because hours defined how many difficulties you had encountered and managed to survive. Since that is still the situation today, no-one has ever thought there was any point in changing.
- 7 年前
because for example helicopters, spend hours hovering which is their job.
besides, you can convert the flight hours into distance travelled by approximation and simply by looking into the logbook (it includes point of departure and point of landing, sometimes the route, too)
- 7 年前
Why? Because planes travel at different speeds and it is time spent airborne that is the preferred measure of overall experience.