FL100 Speed 250Kts

[CDB.A300]

Hello,

Any idea why speed reduction is usually set to FL100?

Trafic, Noise, Bird or something else?

Many Thanks.

[PPRuNe Radar]

Try a 'Search'.

Been covered many times before on PPRuNe

[CDB.A300]

Does'nt help me.
I did not find any answer.

Bye

[catchup]

325 kts!
What else? This bird is certified for that.

regards

[BOAC]

CDB.A300
When I put 'FL100 Speed 250Kts' in search I found exactly the answer!

[xfeed]

I did the search as BOAC advised and read the responses. However, I was under the impression that 747's and 777's had 280 below FL100. Is this true?

Cheers!

[HEATHROW DIRECTOR]

Is this confusion between SOPs and ATC requirements? I'm just guessing but 250kts below FL100 may be an national ATC-type restriction as one operates in busier airspace - TMAs, etc. However, I was never shy of saying "no ATC speed control" and saw many, many aircraft fly considerably faster than 250 below 100.

[fintan]

http://www.pprune.com/forums/showthr...hreadid=125808