I'm not sure if this is the answer that you are looking for, but if you say "Roger" or OK, then the other person does not necessarily know what you are saying OK to. There might be another reason like OK sounds like something else, I am not sure.
some use a system called TCAS (Traffic Collision Avoidance System), but others have to rely on the ATC (Air Traffic Control).
when should you use written comunicatio
Jump on, start engine,
Pilots use mostly electronic equipment. If electronics go out they use instruments.
10w 40
English is the standard language for international aviation communication. Pilots use English to communicate with air traffic controllers, regardless of their native language, to ensure clear and efficient communication. This helps to prevent misunderstandings and ensure the safety of all flights.
Cleared.
use 10 w 30 or 40 does not really matter
no o
Yep.
pilots use barometers because they don't want to crash because of the air pressure might be high
Air Traffic Control (ATC) typically reports atmospheric pressure in inches of mercury (inHg) or hectopascals (hPa), depending on the region. In the United States, the standard pressure setting is often 29.92 inHg, while in other countries, it may be reported in hPa, with 1013.25 hPa being the standard atmospheric pressure at sea level. Pilots use this pressure information to adjust their altimeters, ensuring accurate altitude readings during flight.