Air brake endorsements fall under Federal Laws so every state will have the same minimum requirement for an air brake endorsement if you have air brakes on your vehicle.
Try looking for "air brake endorsement" in the NY driver's manual. You'll notice there isn't mention of one. The reason is because there isn't one. For a CDL driver, if they do not complete and pass the written air brakes test and then conduct their road test in a class appropriate vehicle equipped with air brakes, then they get a restriction which bars them from operating an air-brake equipped commercial vehicles.
All states reciprocate drivers licenses of other states - especially CDLs, which are federally regulated licenses. Your Class B is as valid in Florida as it is in New York.
New York is the name of the state. The City of New York (New York City) is in the state of New York.
New York is the name of the state. The City of New York (New York City) is in the state of New York.
New York City is in New York State.
New York City is in New York State.
The Empire State Building is located in New York, NY.The state of New York is nicknamed the Empire State.New YorkThe Empire State Building is in New York City, New York.
New York City is in the state of New York.
New York city is a city in New York state.
The city of New York is located in the state of New York.
New York State is one of the 50 U.S. states. New York City is a city in New York State.
The "Big Apple" is New York City which is in New York, the state.