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Usually, all the way down.
Yes you can take it on an airplane but you have to keep it switched off.You can use your phone only during take off and during landing. During the flight itself, you are not allowed to use your cell phone.Yes, but they usually ask you to turn them off during at least take off and landing (possibly the rest of the flight, I can't remember).
prototype systems
The forces acting on an aircraft during any phase of flight: thrust, drag, lift, and weight.
Yes, with ear buds. You cannot play it during takeoff or landing, but in flight is OK.
Critical Operational lssues (COI)
Prototype systems typically undergo developmental testing during Operational Test and Evaluation (OT&E) to assess the system's performance in a controlled environment before operational use. This phase focuses on identifying and fixing design flaws and ensuring that the system meets its operational requirements.
Bird strikes to an aircraft rarely cause human casualties, but CAN cause damage to an airplane or an accident. A direct bird strike to the jet engine of an airplane during take off and landing can be particularly serious.
Yes,you can but sometimes they wont allow it but most of the time they do warning:you cannot play during takeoff or landing and do not have any internet swithes on
Yes, however it is considered an electronic device and you will be required to turn it off during take off and landing sequences. Yes.
Operational, Services, Standards, and Systems
Most of the time it travels faster at the point it takes off than at the moment it touches down. During take-off, the airplane uses as much power to ensure it has extra airspeed so it can handle any emergency, such as an engine failure. Whereas during landing, the only concern is to maintain sufficient altitude to reach the airport. Theoretically, the airplane is designed to fly at a minium airpseed and it doesn't matter what it is doing. During Take-off, the aircraft is heavier than it is during landing. Generally, during landing the airplanes uses more flaps to slow it down. For the comfort of the passengers, the pilot likes to land as gently as possible. Faster when taking off, slower when landing. Generally speaking, when taking off, an aircraft weighs more, is more performance limited (i.e., needs to be able to clear obstacles during climb out), and also needs additional speed in the event of emergency. During landings, the aircraft is lighter and needs to slow down as much as possible (through the use of flaps, etc.) to shorten the landing distance.