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

Barometric altimeters are most common, and measure altitude above sea level using atmospheric pressure. Modern commercial ...

Radar altimeters measure height above ground level (AGL) by timing reflected signals, providing direct ground clearance information distinct from pressure altimeters which measure altitude above mean ...

The Federal Aviation Administration will give airlines another year to fix or replace airplane altimeters that can’t filter out cellular transmissions from outside their allotted frequencies. In a ...

Old airplane altimeters are now the main focus of the Federal Aviation Administration (FAA). The aviation department announced that it is urging airlines to replace their aircraft's old altimeters ...