Originally Posted by
hetfield
@Mad (Flt) Scientist
I'm awfully sorry to disagree. Like I already mentioned, my FCOM (A300) says
"Max. operating altitude for slat operation or flaps extended is 20 000 ft."
So it clearly distinguishes between slats extended and slats operation.
What do you think is the chart for (it is also of my FCOM and suggested if you fly for whatever reason with slats extended) ? Is there a doted or red line at 20k feet?
Kind regards
I think we are talking at slightly cross purposes.
The word "operating" related to operation of the aircraft. The word "operation" relates to activation of the slats. So indeed in your case, as worded, flight with "slats extended" is indeed permitted above 20k. (provided they remain fixed)
But the original poster's question was
Could somebody pls explain why 20000 feet( Airbus) is the max operating alt for Flaps Extension.
And in that case (as in your FCOM text) the word 'operating' is an aircraft term, because the word "slat" (or flap, or anything else) isn't attached to it.
Also, logically, the slat(flap) operation envelope must be more restrictive than the slat(flap) extended envelope. So if the flap extended case is restricted below 20k, so must also be the flap operation, at least.
In passing, I'd say the FCOM statement is made clumsy by combining two different concepts. It
should be:
"Max. altitude for slat operation is 20 000 ft.
Max. operating altitude for flaps extended is 20 000 ft."
to distinguish the two more clearly.