Altimeter Clearance Federal Aviation Regulations 
Air Facts
FEBRUARY 10, 2025
is one of the simplest and best known federal aviation regulations, and it clearly defines the most essential job as a pilot: to be the boss for the entire flight. Being able to communicate clearly and efficiently is always helpful in aviation, but IFR flying makes it mandatory. Then a strange thing happened.
Pilot Institute
MAY 25, 2024
Checking NOTAMs before flight is required by Federal Aviation Regulations (FAR 91.103). The Purpose of NOTAMs A Notice to Air Mission (NOTAM) is a bulletin issued by a country’s aviation authority. High-pressure conditions decrease altimeter accuracy, affecting terrain clearance and aircraft spacing.
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