Thanks Roy. I don't have a US licence, so hence my questions. My
thoughts we

200 below class B. So will atc vector me below class B, possibly? In
which case, do pilots normally have a class B airspace chart out, tune
in the EWR VOR, and carefully monitor radials, dme's, altitudes, in
order to slow to 200 prior to being under class B? Somehow, I don't
think most actually do this.

250 below 2500 agl within 4 nm of C or D. Again, does anyone monitor
a low level chart and crosscheck their radial/dme with local vor's in
order to ascertain whether they meet this criteria? Again, I think
most of us are starting to tune in the localizer at this point.

Secondly, if this is reference the elevation of the primary airport,
who really continuously looks up airport elevations as they go (and
airports may be 3 or 4000 msl west of Teb in the appalachians I
presume) adds 2500, and ensures they are above this altitude.
Further, if I'm descended early into TEB, as expected for an arrival
into the NE, and am at 6000 msl 60 miles to the west, is atc really
expecting a sudden decrease to 200 this far out? Somehow I'd expect a

"CFxxx say speed, ...and this aint Dallas so pick it back up to 250
please"

So I guess I'm asking, what would you use in a situation like this to
decide when to slow to 200?

..On Thu, 04 Jan 2007 18:57:19 -0500, Roy Smith wrote:

In article ,
wrote:

So let's say I'm inbound to Teterboro from the west, doing 250 kias
below 10,000 in descent. Atc gives me a radar vector, and clears me
to maintain 4000 feet.

1, Do I need to slow to 200 kias at some time?

Almost certainly, yes, at some point prior to when you flare :-)

I suspect you're thinking of the restrictions imposed by 14 CFR 91.117. It
imposes three basic speed limits:

A) 250 KIAS below 10,000 MSL

B) 200 KIAS below 2500 AGL or within 4 NM of a Class C or D airport.

C) 200 KIAS beneath Class B airspace.

A requires the administrator to waive. B requires ATC to waive. C is
non-waivable. Minimum safe airspeed trumps all those. That's usually only
a factor for a heavy jet right after takeoff.

In your case, B is probably what applies. If you want to exceed 20 KIAS,
make a request of the controller.