Your smartphone already does an amazing variety of things. It's your camera, navigation guide, and compass. You may not know that it can also function as a real barometer and altimeter, allowing you ...

The Federal Aviation Administration has issued a proposed rule requiring operators to upgrade radio altimeters again as the ...

The FAA estimates US operators may need to replace or upgrade 58,600 radio altimeters at a cost of about $4.5B to avoid ...