320kts below 10,000' - legal?
 

Yeah yeah, you're all saying, "Pfff, what kind of question is that? 'Course it's not legal!" Well, what about inter-island Hawaii? Where exactly do the FARs apply? And for that matter, where does ICAO apply?

There is plenty of water outside the 12-mile offshore rule while flying between the islands. Here's a fun scenario: Ask for an early descent, blast down to 500', and buzz the cruise ships at 320 knots (slow down by 12 miles offshore, of course.)

Try it at 500 knots it's even more fun!

sounds like fun

It's legal if you need it for operational necessity ;)

500KIAS?

That's not much above flap speed.

Arriving at JFK one morning around 6:45am NY Approach told us "You guys are out over the water, your the only one out there... keep the speed up" as we descended through 10,000. We kinda got what he meant, but since it wasn't a definite "you can maintain above 250 below 10" clearance on the tape we kept it to 250 just to be safe. When he handed us off he asked our speed and said "I was expecting 350 not 250." Of course I was kicking myself we didnt take advantage of that.

The airspace should be clearly notated on your charts.

If you hit a bird at 320 or 335, it is going to leave a mark.

You are right, we often keep our speed up below 10,000' when we go to the islands. Aloha and Hawaiian take full advantage of it too. Birds rarly are above 5,000' but if you hit one, ouch.

You are talking about when a 747 requires 258kts for flaps up after takeoff. But the 12 mile rule does not require the ' necessity' when arriving into JFK from over water and the Hawaiian islands. LAX has the Channel islands that prevent the use of the 12 mile rule.

It is quite common to exceed 250 in Europe. ATC will often approve it if you ask for "high speed." It's OK in Canada also if cleared above a certain altitude, (7000?). It says so on the SID.