Complex sentence: Inside the aircraft, pilots use a similar procedure, by adjusting their "altimeter" settings with respect to the local air pressure; pilots may obtain the local air pressure information from air traffic control or from the Automatic Terminal Information Service (ATIS).
Split into simpler sentences: Inside the aircraft, pilots use a similar procedure, by adjusting their "altimeter" settings with respect to the local air pressure. Pilots may obtain the local air pressure information from air traffic control or from the Automatic Terminal Information Service (ATIS).