What is the violation speed for planes under 10,000 feet?

I know that the violation speed is normally 250kts but I was able to fly at like 300kts in a jet (unsure if this is necessary) without a violation. Any help?


In IF? Or real world? IF 250 kts at or below 10,000. Real world no clue

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In IF. I was flying at around 300 kts below 10,000 feet without a warning/violation. :confused:

You were most likley on the wrong server unknowingly.

Nope. In the ATC playground.

(@jooball) All these type questions may be answered on the Web utilizing the FAA.Gov Web Site. The regulation is termed the “FAR”. Here is the cite:
Sec. 91.117 — Aircraft speed.

(a) Unless otherwise authorized by the Administrator, no person may operate an aircraft below 10,000 feet MSL at an indicated airspeed of more than 250 knots (288 m.p.h.).
(b) Unless otherwise authorized or required by ATC, no person may operate an aircraft at or below 2,500 feet above the surface within 4 nautical miles of the primary airport of a Class C or Class D airspace area at an indicated airspeed of more than 200 knots (230 mph.). This paragraph (b) does not apply to any operations within a Class B airspace area. Such operations shall comply with paragraph (a) of this section.

© No person may operate an aircraft in the airspace underlying a Class B airspace area designated for an airport or in a VFR corridor designated through such a Class B airspace area, at an indicated airspeed of more than 200 knots (230 mph).

(d) If the minimum safe airspeed for any particular operation is greater than the maximum speed prescribed in this section, the aircraft may be operated at that minimum speed.

Here’s a cite for a very valuable free document available from the FAA I suggest you down load it and study it: " The Pilots Handbook of Aeronautical Knowledge".

Hope this help Fledgling, Pass it on. Mad Max Sends


All aircrafts, commercial and military, must never exceed 250 knots below 10.000 ft.
However, ATC occasionally allows faster climbs (in real world).

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on second thought… maybe your speed was regeresting ground speed instead of airspeed for some reason.

@jooeball For future reference watch your use of terminology! This Forum is full of vipers! “normal planes and jets”. All airplanes are normal. there are hybrids but there still airplanes. Common practice is to differentiate type by its
Propulsion; Reciprocating, Turbo, Jet, Rocket ect. or type: Seaplane, multi engine ect. Pick up on aviation common terms, again there are multiple Web sight that brake out aviation common use terms like “V” speed, DME, ILS, PIPI, etc. see a term here you don’t understand jot it down… Google it when you have time. Just Sayin, Mad Max Sends

Actually it should be 10.000 feet AGL not just simply 10.000 feet, AGL = above ground level.

So an airport at 400 feet altitude the violation will be at 10.400 feet.

Airport at 2400 feet it will be 12.400 feet.


That is how it is in real life right AGL? Why isn’t it that way in IF

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@matt is this an idea??

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I’m pretty sure it’s MSL. It makes little sense to make it AGL. How can you tell your altitude AGL if you don’t have a radio altimeter or a GPS with terrain?

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Thanks for clearing that up I searched but couldn’t find the answer

I was flying mach two below 10,000 feet with no violatiosn

I flew into South Africa, Johannesburg FAOR with elevation of 5558’. You won’t be flying 300+ knots at 4400 feet AGL there. Same for Aspen at 7000+ feet. I’ll try to find some more info soon :)

But maybe in the USA it’s all based on MSL indeed.

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So here we go;

It is MSL indeed, we always change it to 10.000 feet as airmanship as you don’t want to fly 330 knots at 4000 feet above ground.

Just realized I replied 13 days after… Never got a notification, can I switch this on somewhere??

Switch tracking to watching. @Aernout

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