"Darrell" wrote in message
news:qGBQb.65209$XD5.36267@fed1read06...

True. But normally 250 is adhered to for civilian types in the U.S. until
ATC is advised of the necessary speed and authorizes it. I currently teach
the MD-80 and on those that can go up to 159,500# for Take Off the minimum
maneuvering speed for a clean wing is 260 KIAS. We teach to set 250 in
the
autothrottle window for takeoff. Bank angle 15 is also set for takeoff.
250 is OK with 15 degrees of bank. When ATC agrees to the higher speed
(for
aircraft separation purposes), we set the higher speed and then increase
bank angle to 30 degrees. If an immediate turn is mandatory for safety we
can extend leading edge slats (which reduces maneuvering speed by about 40
knots) and go to 30 degrees of bank at 250.


ATC cannot authorize or require deviation from the 250 KIAS speed limitation
below 10,000 MSL, except within airspace delegated to Houston approach
control, and then only for departing aircraft.