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K0879S1190 meaning?

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K0879S1190 meaning?

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Old 22nd Jul 2013, 03:57
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K0879S1190 meaning?

Hey guys,

What do the strings such as K0879S1190 or K0870F350 etc etc mean in flight plans?

Thanks!
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Old 22nd Jul 2013, 05:32
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I would say these are the codes used in OFPs to show changes of speed or Flight levels.
As usual K is for Knots and the digits for the cruising speed in TAS, but over 800 seems a bit too fast
F is for flight level.
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Old 22nd Jul 2013, 05:56
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S= Standard Metric Level in tens of metres.

K= TAS in km/h

F= Flight Level

Atlas Aviation - ICAO Flight Plan instructions directions information

n.b. N denotes TAS in knots

Last edited by Re-entry; 22nd Jul 2013 at 05:59.
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Old 22nd Jul 2013, 07:58
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K0879S1190 is 879km/hr at 11900 metres altitude.
roughly 474knots at FL390.

Airspeed in True Airspeed.

Knots is marked N (Nautical Mile derivative)


I know the CIS states (ie Russia and similar) used to use the Metric Metres for Altitude, but changed this a few years back so that Metric is only used under the transition altitude, and Feet/FL above transition.

About the only place that still uses Metres for altitudes is China/Mongolia as far as I am aware?

If you were flying the same profile in (places that are not China/Mongolia) it would be N0474F390

The Km/Hr and Foot Flight Level sounds like what would happen over Russian/Former CIS areas now that their Flight Levels are in feet. (I assume their Km/Hr is still Km/Hr).
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