PPRuNe Forums - View Single Post - 478 vs 588 kts...
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Old 8th Dec 2008, 06:28
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Robini
 
Join Date: Oct 2007
Location: In OY-VKH
Age: 31
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Hello Sapperkenno,
I checked them at the same time. We didn't have the same speed all the time,
but it said 1000-1100 km/h under the whole flight. But at the same time it also
said around 550MPH so i'm getting a bit confused here
The route was GOT-SHJ wich is about 4947 km and if we would have this
kind of speed we would reach Sharjah in a very short time.
The funniest thing is that we landed late when we departed in time (for once).

Little deeper look in this searching get's following:
We got to FL280 after 330 km climbing, we waited for some reason
(maybe x-tremly heavy cause it was night and no traffic above).
We continued to climb after some minutes waiting, to FL370.
From FL280 to FL370 it took 250 km. So total distance to getting to
altitude cruising was about 580 km.
BTW when we got lighter later in the flight we went to FL390...

Not exactly sure when we began our decend but say typical 300 km before
reaching destination.

580+300= 880 km was during no cruise...

4947-880=4060 km in cruise

During cruise it took about 5 h 30 min...

4060/5,5= 738 km/h wich is about 400 knt...

Logically we couldn't even have reached 588 kt?
Cause we seemed to have quite strong headwinds....
Robini is offline