Altimeters measure atmospheric pressure, not true altitude, and are prone to inherent errors because real-world conditions rarely match the "standard atmosphere" they are calibrated against.
Investigation into the Hop Bombardier CRJ1000 low-approach incident at Nantes in October 2021 has exposed vulnerabilities in crucial pressure-setting procedures, and potential difficulties in ...
French investigation authority BEA believes the prevalence of ILS approaches has obscured an underlying vulnerability of aircraft to the risk of terrain collision arising from incorrect altimeter ...
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