Mechanical altimeters, despite their ingenious design, are susceptible to various instrument errors including mechanical wear, scale inaccuracies, installation/position effects, and hysteresis, which ...

The thing is, all altimeters work off barometric pressure. That’s how the gadgets know you’re going up or down changing air pressure as you ascend or descend pushes in or pulls out a tiny membrane ...

A three-day National Transportation Safety Board hearing on the deadliest U.S. aviation accident in decades dug into problems with altimeters,... Three days of hearings held by federal investigators ...

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