KC-10 min maneuver at MTOGW (590K) is 292.

I would research this a bit more. If under a class B 200 knots is the maximum even if it requires flap extension. This was covered many times at my airline in op specs.

Might be in your OpsSpecs, but not in the FAR.

GF

My airline got in some trouble with the FAA because we would routinely exceed the 250 below 10.000 upon departure! Note in route documentation now that says unless specific approval is given to exceed 250, speed should be 250, even if this means climbing to 10.000 with flaps 1! Specific places that complained where Lax and ORD.

The history is you can exceed the speed limits IF required for clean operation. If the ATC asks, say, "min required speed", been that way for decades. Something changed?


GF

I would read the FAR. You are confusing minimum clean speed with minimum safe speed. It's not unsafe to extend slats or flaps. On climb out you can exceed 250 if clean is higher however that does not apply to below class bravo. The climb out portion is a specific FAA interpretation.

This situation happens to us sometimes while departing PAE in the LFC Dreamlifter. You are underneath SEA class B.

We fly heavies all over the world, and I have never heard of anyone getting into "trouble" over this.

Many controllers will preemptively give you the "high speed approved" clearance on initial contact.

So I would be interested in hearing from guys leave ATL on let's say the DAWGS departure on the south side taking off west. At the 90 degree turn to go downwind it says 250kts until the turn. What do you do? Keep slats/flaps out until making the turn?

Since nobody in ATC really cares, and most are ignorant of the rule, it's likely no one will ever get in trouble over this unless they admit to it or get in enough glue that someone dumps data from the airplane.

In the U.S., controllers may approve higher speeds in Class C and D airspace. The situation cited above is not a valid clearance.

As usual, we are not the first people to ask this question.

http://www.faa.gov/about/office_org/...rpretation.pdf